JP7188037B2 - Data processing device and data processing program - Google Patents

Description

The present invention relates to a data processing apparatus and a data processing program that perform processing when document data to be transmitted or data to be printed contains link information that can be linked to the outside by a predetermined operation.

For example, as a data processing device such as a multifunction digital multi-function peripheral called MFP (Multifunction Peripheral), a device equipped with a browser function and a function of connecting to an external site via the Internet has been provided. If such a function is provided, it may become a target of malicious attacks as a network device, so a virus scan function is being installed.

By the way, there is a case where a data processing apparatus transmits document data to a predetermined transmission destination by e-mail or the like. In this case, if the document data contains link information that can be linked to the outside, the destination user opens the received document data and accesses the link destination indicated by the link information. Previous information can be displayed and referenced.

However, if the link destination is a dangerous site infected with a virus, etc., there is a problem that the terminal device of the user at the transmission destination is infected with the virus.

Also, even if the link destination of the link information in the document data is not a dangerous site at the time of transmission, it may become a dangerous site later, and the same problem occurs in this case as well.

This kind of problem occurs not only when sending document data, but also when printing data that includes link information that can be linked to the outside. The same thing happens when accessing a link destination.

Furthermore, when document data containing link information that can be linked to the outside is saved, a similar problem occurs when the user accesses the saved document data.

Patent Document 1 discloses a mail server that, upon receiving a transmission request for an e-mail containing a destination, transmits the e-mail to the destination, determines whether or not an attachment is included in the e-mail transmission request, Disclosed is a mail server that, when it determines that a file is included, sends the file to the destination using a technique that increases security according to the combination of the security level associated with the destination and the security level of the attached file. .

Japanese Patent Laid-Open No. 2002-200000 describes a data communication system capable of preventing eavesdropping or falsification of transmitted data while minimizing the load on the receiving terminal. Then, the document to be sent is read and stored as an image file in the storage unit. If the mail is connected to an external communication line, an external receiving URL is generated. If the mail is connected to an internal communication line, an external receiving URL is generated. A system is disclosed in which a mail document is written at a predetermined position in a document and the mail document is sent to the destination of the image data.

JP 2013-251753 A JP-A-2002-35291

However, the techniques described in these Patent Documents 1 and 2 do not determine whether or not the attached file or transmission manuscript contains link information that can be linked to the outside. If the link information that can be linked to the outside is included in the link destination, if the link destination is a dangerous site infected with a virus, etc., the terminal device of the user who accessed the link destination may be infected with the virus. It was not possible to provide a solution to the problem.

The present invention has been made in view of such a technical background. To provide a data processor and a program capable of solving the problem that a terminal device of a user accessing a linked site may be infected with a virus if the linked site is a dangerous site.

The above objects are achieved by the following means.
(1) determining means for determining whether or not document data to be transmitted contains link information that can be linked to an external device by a predetermined operation; If it is determined that the link information is included in the document data, if the link information is not included in the document data, the document data to a transmission destination, and if it is determined that the link information is included in the document data, transmission means for transmitting access information to the document data stored in the storage means to the transmission destination; risk detection means for detecting whether or not the link information contained in the document data is dangerous when the data is stored in the storage means and continuously after the data is stored; When a risk is detected, the link information is rewritten so that the link to the outside is disabled, and after the access information is transmitted by the transmission means, if a risk is detected in the link information, the link information is A data processing apparatus comprising: control means for permitting access to the document data after rewriting the link information in a state in which access to the document data containing the link information is prohibited.
(2) When the risk detecting means detects no risk of the link information when saving the document data in the saving means, the control means controls the mirror site of the link destination of the link information. and updates the mirror site if no risk is detected in subsequent risk detection by the risk detection means, and prohibits access to the document data if the risk is detected. 2. The data processing device according to the preceding item 1, wherein access to the document data is permitted after rewriting the link information so as to be linked to the mirror site.
(3) The risk detection means according to the preceding item 1 or 2, wherein the risk detection means monitors the frequency of access to the document data and the access to the link information in the document data, and detects the presence or absence of risk according to the access frequency. data processing equipment.
(4) When the document data stored in the storage means is opened, the risk detection means detects whether the link information in the document data is at risk. 4. The data processing device according to any one of the preceding items 1 to 3, wherein the means prohibits opening of the document data.
(5) When the document data stored in the storage means is copied or moved, the risk detection means detects whether the link information in the document data is at risk. 4. The data processing apparatus according to any one of the preceding items 1 to 3, wherein the control means prohibits copying or moving of the document data.
(6) When the storage means is accessed, the risk detection means detects whether the link information in the document data stored in the storage means is at risk. 4. The data processing apparatus according to any one of the preceding items 1 to 3, wherein the document data for which is detected is prohibited from being opened.
(7) After the document data stored in the storage means is opened, the risk detection means detects whether the link information in the document data is at risk. 4. The data processing apparatus according to any one of the preceding items 1 to 3, wherein the control means instructs to close the document data.
(8) When the risk detection means detects a risk with respect to the link information included in the document data stored in the storage means, the control means detects other document data containing the same link information. 8. The data processing device according to any one of 1 to 7, wherein access is also prohibited.
(9) The data processing apparatus according to any one of (1) to (8) above, wherein the risk detection means detects the presence or absence of risk of the link information by checking the risk of the link destination indicated by the link information. .
(10) The data processing apparatus according to any one of (1) to (9) above, wherein the control means notifies a user of a warning when the risk detection means detects a risk with respect to the link information.
(11) The data processing apparatus according to any one of the preceding items 1 to 10, further comprising setting means for setting a time limit for detecting the presence or absence of risk by the risk detection means.
(12) printing means for printing data to be printed on a recording medium; character recognition processing means for performing character recognition processing on the data to be printed before printing by the printing means; and character recognition by the character recognition processing means. determination means for determining whether or not the print target data contains link information that can be linked to an external device by a predetermined operation, based on the result of the processing; a storage means for storing the link information when it is determined that the link information is included in the document data; and a risk detection means for detecting the presence or absence of a data processing device.
(13) A warning notification means for notifying a user who has printed data to be printed containing the link information when the risk detection means detects a risk for the link information. 13. The data processing device according to 12 above.
(14) data conversion means for converting image data obtained by reading a document into text information searchable document data by character recognition processing; and transmitting the document data converted by the data conversion means to a destination. transmitting means; determining means for determining whether or not the document data contains link information that can be linked externally by a predetermined operation; When it is determined that the link information is included, storage means for storing the link information, and continuously detecting whether or not the stored link information is dangerous after storage in the storage means. A data processing device comprising: a danger detection means for
(15) data conversion means for converting image data obtained by reading a document into text information searchable document data by character recognition processing; document data storage means for storing the document data obtained; determination means for determining whether or not the document data contains link information that can be linked externally by a predetermined operation; a link information storage unit for storing the link information when the determination unit determines that the link information is included in the document data; and risk detection means for detecting the presence/absence of risk with respect to the link information received.
(16) 15 above, comprising control means for disabling retrieval of the link information for the document data containing the link information when the risk detection means detects the risk of the link information. The data processing device according to .
(17) a determination step of determining whether or not the document data to be transmitted contains link information that can be linked to the outside by a predetermined operation; is determined, it is determined that the link information is not included in the document data by a storing step of storing the document data in a storing means provided in the device itself or an external device, and the determining step. a transmitting step of transmitting the document data to the destination, and, if it is determined that the link information is included in the document data, transmitting access information to the document data stored in the storage means to the destination; a risk detection step of detecting whether or not there is a risk of the link information included in the document data when the document data is stored in the storage means and continuously after the document data is stored; , when a risk is detected with respect to the link information, access to the document data containing the link information is prohibited, and the link information is rewritten so that it cannot be linked to the outside, and then the document data and a data processing program for causing a computer of the data processing apparatus to execute a control step to allow access to.
(18) A computer of a data processing apparatus comprising printing means for printing data to be printed on a recording medium, and character recognition processing means for performing character recognition processing on the data to be printed before being printed by the printing means. a determination step of determining whether or not the data to be printed includes link information that can be linked to an external device by a predetermined operation, based on the result of character recognition processing by the character recognition processing means; a saving step of saving the link information in a saving means provided in the own device or an external device when it is determined that the link information is included in the document data; and continuing after saving in the saving means. Specifically, a data processing program for executing a risk detection step of detecting the presence or absence of risk with respect to the saved link information.
(19) a data conversion step of converting image data obtained by reading a document into document data whose text information can be searched by character recognition processing; and transmitting the document data converted by the data conversion step to a destination. a transmitting step; a determining step of determining whether or not the document data contains link information that can be linked to an external site by a predetermined operation; If determined, a saving step of saving the link information in a saving means provided in the own device or an external device; and a data processing program for causing the computer of the data processing device to execute a risk detection step of detecting the presence or absence of
(20) a data conversion step of converting image data obtained by reading a document into text information searchable document data by character recognition processing; a document data saving step of saving in a document data saving means provided in the apparatus of (1), a determining step of determining whether or not the document data contains link information that can be linked to the outside by a predetermined operation, and the determining step a link information saving step of saving the link information in link information saving means provided in the device itself or an external device when it is determined that the link information is included in the document data; A data processing program for causing a computer of a data processing device to execute a risk detection step of continuously detecting the presence or absence of risk in the saved link information after saving in the information saving means.

According to the invention described in the preceding paragraph (1), when the document data to be transmitted contains link information that can be linked to the outside by a predetermined operation, the document data is transmitted regardless of whether or not the link information is dangerous. The document data is saved in the saving means, and the access information to the saved document data is transmitted to the destination. On the other hand, for the document data saved in the saving means, whether or not the link information included in the document data is in danger is detected at the time of saving to the saving means and continuously after the saving. Then, when danger is detected, the link information is rewritten so that the link to the outside is disabled. If danger is detected after the access information is sent, access to the document data containing the link information is prohibited, and after the link information is rewritten, access to the document data is permitted. .

Therefore, it is possible to prevent the document data containing the link information that can be linked to the outside by a predetermined operation from being transmitted to the destination as it is. It is possible to prevent the user's terminal device from being infected with a virus when the user at the transmission destination accesses the document data.

According to the invention described in the preceding paragraph (2), when no danger is detected in the link information when the document data is stored in the storage means, a mirror site of the external link destination linked by the link information is established. After that, the mirror site will be updated if no danger is detected in the subsequent danger detection, and if the danger is detected, access to the document data will be prohibited and the link information will be linked to the mirror site. Since access to the document data is permitted after rewriting it as follows, even if the destination user performs an operation to link to the link destination for the link information that is detected to be dangerous, the mirror is safe. Links to the site do not link to dangerous links, so it is possible to improve safety while maintaining user convenience.

According to the invention described in the preceding paragraph (3), the frequency of access to the document data and the access to the link information in the document data are monitored, and the presence or absence of danger is detected according to the access frequency. It is possible to efficiently detect the presence or absence of danger without imposing an excessive load on the processing device.

According to the invention described in the preceding paragraph (4), when the document data stored in the storage means is opened, the presence or absence of risk is detected for the link information in the document data, and if the risk is detected, the document By prohibiting data from being opened, users can be prevented from accessing dangerous links.

According to the invention described in the preceding item (5), when the document data stored in the storage means is copied or moved, the presence or absence of risk is detected for the link information in the document data, and the risk is detected. In this case, copying or moving of the document data is prohibited, thereby preventing the user from accessing dangerous links.

According to the invention described in the preceding paragraph (6), when the storage means is accessed, the presence or absence of danger is detected in the link information in the document data stored in the storage means, and the danger is detected. Since the document data is prohibited from being opened, it is possible to prevent the user from accessing dangerous link destinations.

According to the invention described in the preceding paragraph (7), after the document data stored in the storage means is opened, the presence or absence of risk is detected for the link information in the document data, and if the risk is detected, the document Users are prevented from accessing potentially dangerous links by being instructed to close the data.

According to the invention described in the preceding item (8), when danger is detected in link information included in document data stored in the storage means, access to other document data including the same link information is also prohibited. , you can more effectively prevent users from accessing dangerous links.

According to the invention described in the preceding item (9), the presence or absence of risk of the link information is detected by checking the risk of the link destination indicated by the link information.

According to the invention described in the preceding item (10), when danger is detected in link information, a warning is sent to the user, so the user can recognize that the link destination is dangerous.

According to the invention described in the preceding item (11), for example, the administrator of the data processing device can set a time limit for detecting the presence or absence of danger.

According to the invention described in the preceding item (12), it is determined whether or not the data to be printed includes link information that can be linked to the outside by a predetermined operation. is stored in storage means. Then, since the presence or absence of danger in the saved link information is continuously detected after saving in the storage means, for example, if danger is detected, the link destination is dangerous to the user who printed it. It is possible to take measures such as notifying that there is a risk, and prevent the user from accessing a dangerous link destination.

According to the invention described in the preceding item (13), when danger is detected in the link information, a warning is sent to the user who has printed the data to be printed that includes the link information. Able to recognize danger ahead.

According to the invention described in the preceding item (14), image data obtained by reading a document is converted into text information searchable document data by character recognition processing, and the converted document data is sent to a transmission destination. sent. On the other hand, it is determined whether or not the document data contains link information that can be linked to the outside by a predetermined operation. Since the presence or absence of risk in the saved link information is continuously detected after saving in the saving means, for example, if the risk is detected, the user to whom the document data is sent will not be able to access the link destination. It is possible to take measures such as notifying the user of the danger, thereby preventing the user from accessing the dangerous link destination.

According to the invention described in the preceding item (15), image data obtained by reading a document is converted into document data whose text information can be searched by character recognition processing, and the converted document data is saved as document data. stored in the means. On the other hand, it is determined whether or not the document data contains link information that can be linked to the outside by a predetermined operation. Since the existence or non-existence of risk in the saved link information is continuously detected after saving in the link information saving means, for example, when the risk is detected, measures such as deleting the link information are taken. prevent users from accessing potentially dangerous links.

According to the invention described in the preceding paragraph (16), when a risk is detected in link information, the document data containing the link information cannot be searched for the link information. You can prevent users from accessing certain links.

According to the invention described in the preceding item (17), when the document data to be transmitted contains link information that can be linked to the outside by a predetermined operation, the document data is transmitted regardless of whether or not the link information is dangerous. The document data is stored in the storage means, and the access information to the stored document data is sent to the destination. Detects whether or not the link information contained in the document is dangerous, and if the danger is detected, prohibits access to the document data containing the link information, and makes it impossible to link to the outside After rewriting the link information, the computer of the data processing apparatus can be caused to execute processing for permitting access to the document data.

According to the invention described in the preceding item (18), it is determined whether or not the data to be printed includes link information that can be linked to the outside by a predetermined operation. is stored in the storage means, and continuously after the storage, the computer of the data processing device can be made to execute a process of detecting whether or not the stored link information is dangerous.

According to the invention described in the preceding item (19), image data obtained by reading a document is converted into text information searchable document data by character recognition processing, and the converted document data is transmitted to a transmission destination. Then, it is determined whether the document data contains link information that can be linked to the outside by a predetermined operation, and if it is determined that it is included, the link information is stored in the storage means, and continuously In addition, the computer of the data processing device can be made to execute processing for detecting the presence or absence of danger with respect to the stored link information.

According to the invention described in the preceding item (20), image data obtained by reading a document is converted into document data whose text information can be searched by character recognition processing, and the converted document data is stored in the document data storage means. and determining whether or not the document data contains link information that can be linked to the outside by a predetermined operation, and if it is determined that the document data contains link information, It is possible to cause the computer of the data processing device to continuously execute the process of detecting the presence or absence of danger with respect to the saved link information after saving.

1 is a block diagram showing the configuration of a data processing device according to one embodiment of the present invention; FIG. Data processing in which, when sending document data to a destination by e-mail, etc., it is determined whether or not the document data contains link information that can be linked externally by a predetermined operation, and processing is executed according to the determination result. It is a flow chart showing the operation of the device. 4 is a flow chart showing risk check processing for document data having external link information that is saved, which is performed by the data processing device. 8 is a flow chart showing the operation of the data processing device when transmitting document data in another embodiment of the present invention; 10 is a flow chart showing risk check processing for stored document data having external link information, which is performed after the data processing device establishes a mirror site; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; 10 is a flow chart showing the operation of the data processing device when checking the risk of stored document data in still another embodiment of the present invention; It is a figure which shows an example of a warning mail. 9 is a flow chart showing the operation of the data processing device in still another embodiment of the present invention; 5 is a flowchart showing risk check processing of print target data from which external link information is extracted, performed by the data processing device; 9 is a flow chart showing the operation of the data processing device in still another embodiment of the present invention; FIG. 16 is a flowchart showing risk check processing of the document data saved in step S143 of FIG. 15 performed by the data processing device; FIG. 9 is a flow chart showing the operation of the data processing device in still another embodiment of the present invention; FIG. 18 is a flow chart showing risk check processing of document data having external link information extracted in step S173 of FIG. 17, performed by the data processing device; FIG.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a data processing device 1 according to one embodiment of the invention. As the data processing apparatus 1, in this embodiment, an image forming apparatus, in particular, an MFP, which is a multifunctional digital multifunction peripheral having a copy function, a printer function, a scan function, a facsimile function, an e-mail (simply referred to as mail) function, and the like, is used. used. In the following description, the data processing device is also called MFP.

As shown in FIG. 1, the MFP 1 includes a control unit 100, a storage device 110, an image reading device 120, an operation panel 130, an image output device 140, a printer controller 150, a network interface (network I/F) 160, a wireless communication interface ( It includes a wireless communication I/F) 170 , an authentication section 180 , a character recognition processing section (OCR section) 190 and the like, which are connected to each other via a system bus 175 .

The control unit 100 includes a CPU (Central Processing Unit) 101, a ROM (Read Only Memory) 102, an S-RAM (Static Random Access Memory) 103, an NV-RAM (Non Volatile RAM) 104, a clock IC 105, and the like.

CPU 101 centrally controls the entire MFP 1 by executing an operation program stored in ROM 102 or the like. For example, the copy function, printer function, scan function, facsimile function, mail transmission function, etc. are controlled to be executable. Furthermore, in this embodiment, it is determined whether or not various types of document data such as document data to be transmitted, document data to be printed, and document data to be saved contain link information that can be linked to the outside by a predetermined operation. Also, depending on the determination result, control for anti-virus measures and the like are executed, the details of which will be described later.

ROM 102 stores programs executed by CPU 101 and other data.

The S-RAM 103 serves as a work area when the CPU 101 executes programs, and temporarily stores programs and data used when the programs are executed.

The NV-RAM 104 is a non-volatile memory backed up by a battery, and stores various settings related to image formation.

The clock IC 105 measures time and functions as an internal timer to measure processing time.

The storage device 110 is composed of a hard disk or the like, and stores programs such as security software for antivirus, and various data such as document data.

The image reading device 120 has a scanner or the like, reads an original set on a platen glass by scanning, and converts the read original into image data.

The operation panel 130 is used by the user to instruct the MFP 1 about a job or perform various settings, and includes a reset key 131, a start key 132, a stop key 133, a display section 134, a touch panel 135, and the like.

A reset key 131 is used to reset settings, a start key 132 is used to start operations such as scanning, and a stop key 133 is pressed to interrupt an operation. is.

The display unit 134 is composed of a liquid crystal display device, for example, and displays messages, various operation screens, and the like. A touch panel 135 is formed on the screen of the display unit 134 and detects a user's touch operation. Also, the display unit 134 can display data described in HTML via a web browser.

The image output device 140 prints the image data of the document read by the image reading device 120 or the copy image generated from the print data transmitted from the terminal device 3 on paper and outputs the printed matter.

Printer controller 150 generates a copy image from print data received by network interface 160 .

The network I/F 160 functions as communication means for transmitting/receiving data to/from an external device such as the server 2 via the network 4, connecting to the Internet to access a predetermined website, and performing wireless communication. The I/F 170 is an interface for communicating with an external device by short-range wireless communication.

The authentication unit 180 acquires the authentication information of the logged-in user, and performs authentication by comparing this authentication information with the information for comparison previously stored in the storage device 110 or the like. It should be noted that the comparison and collation between the user authentication information and the collation information may be performed by an external authentication server, and the authentication may be performed by the authentication unit 180 receiving the authentication result from the authentication server.

The OCR unit 190 performs character recognition processing on image data of a document read by the image reading device 120 and other data, and converts the data into text data.

Next, when the MFP 1 shown in FIG. 1 transmits the document data to the destination by e-mail or the like, it is determined whether or not the document data contains link information that can be linked to the outside by a predetermined operation. will be described with reference to the flow chart of FIG. 2 and subsequent flowcharts are executed by the CPU 101 of the MFP 1 operating according to an operation program recorded in a recording medium such as the ROM 102. FIG.

The user selects any document data from the document data stored in the storage device 110, for example, and designates the destination using the operation panel 130, so that the selected document data is sent as an attached file to the destination. shall be sent to

In step S001, it is checked whether or not the document data is to be sent to the outside. If not (NO in step S001), the process is terminated. If it is transmission processing (YES in step S001), it is determined in step S002 whether link information (also called external link information) that can be linked to the outside is included in the document data. The external link information is, for example, a URL (uniform resource locator) or a QR code (registered trademark) indicating a link destination, and the user can connect to the link destination by performing an operation to access the link destination.

If the document data does not contain external link information (NO in step S002), the security software checks the document data itself for viruses in step S009, and then designates the document data as an attached file in step S010. E-mail is sent to the specified destination and the process ends.

If the document data contains external link information (YES in step S002), in step S003 the document data is saved in a predetermined folder 111 of the storage device 110, and the document data itself is virus-checked by security software. conduct.

Next, in step S004, the external link information in the document data is extracted, associated with the document data, and stored in the association table. For example, it checks whether or not the link destination is infected with a virus, and in step S006, it is determined whether or not a danger has been detected.

If a risk is detected (YES in step S006), in step S007, the external link information in which the risk is detected is replaced (rewritten) by, for example, blacking out or imaging, and then the process proceeds to step S008. If no danger is detected (NO in step S006), the process proceeds directly to step S008.

In step S008, information on the storage location of the document data in the storage device 110, which is access information to the document data, is inserted into the body of the email and sent to the specified destination.

FIG. 3 is a flow chart showing risk check processing for document data having external link information, which is performed by the MFP 1 .

The MFP 1 regularly checks the risk of the link destination of the external link information, and checks whether it is the regular check timing in step S021. If it is not the scheduled check timing (NO in step S021), the process ends. If it is the scheduled check timing (YES in step S021), it is checked in step S022 whether or not there is document data to be checked. If there is no document data to be checked (NO in step S022), the process ends. If there is document data to be checked (YES in step S022), in step S023, the risk of link destinations of all external link information in the association table is checked.

In step S024, it is determined whether or not danger is detected, and if no danger is detected (NO in step S024), the process is terminated. If a risk is detected (YES in step S024), in step S025, after extracting the document data containing the external link information for which the risk is detected, in step S026, user access to the extracted document data is prohibited. do. Next, in step S027, the external link information detected as dangerous in the document data is replaced by, for example, blacking out or imaging, and in step S028, user access to the document data for which access is prohibited is permitted.

As described above, in this embodiment, when the document data to be transmitted includes external link information, the document data is stored in the predetermined folder 111 of the storage device 110 regardless of whether or not the external link information is dangerous. The document data is stored, and access information to the stored document data is transmitted to the destination. On the other hand, for the saved document data, whether or not the external link information included in the document data is dangerous is detected at the time of saving and continuously after saving. Then, when danger is detected, the external link information of the document data is rewritten so that the external link is disabled. In addition, if a danger is detected after the access information is sent to the user, the external link information is rewritten while the user's access to the document data containing the external link information is prohibited. Access to data is allowed.

Therefore, it is possible to prevent the document data containing the dangerous external link information from being transmitted to the destination as it is. It is possible to prevent the occurrence of a situation in which a user's terminal device is infected with a virus due to the user's access to the destination.

Note that the process of checking whether the document data stored in the folder 111 is at risk shown in FIG. 3 monitors the frequency of access to the stored document data and access to external link information in the document data. , it is desirable to perform detection in accordance with the access frequency from the viewpoint of being able to efficiently detect the presence or absence of danger without imposing an excessive load on the MFP 1 .

Further, the administrator or the like may be allowed to set the time limit for checking the presence or absence of risk of the document data stored in the folder 111 shown in FIG. In this case, a deadline may be set for each document data.

FIG. 4 is a flow chart showing the operation of MFP 1 when transmitting document data according to another embodiment of the present invention. In this embodiment, a mirror site is established for the external link information in the document data saved in the folder 111. FIG.

In the flowchart of FIG. 4, steps S001 to S010 are the same as those of the flowchart shown in FIG.

In this example, if no danger is detected in step S006 (NO in step S006), in step S031, after opening a mirror site of the external link destination to be linked with the external link information, in step S032, the external link Add the opened mirror site information to the association table between the information and the document data.

FIG. 5 is a flow chart showing risk check processing for stored document data having external link information, which is performed after MFP 1 establishes a mirror site.

The MFP 1 regularly checks the risk of the link destination of the external link information, and checks in step S041 whether or not it is the regular check timing. If it is not the regular check timing (NO in step S041), the process ends. If it is the scheduled check timing (YES in step S041), it is checked in step S042 whether or not there is document data to be checked. If there is no document data to be checked (NO in step S042), the process ends. If there is document data to be checked (YES in step S042), in step S043, the risk of link destinations of all external link information in the association table is checked.

In step S044, it is determined whether or not danger is detected, and if no danger is detected (NO in step S044), the process is terminated. If a risk is detected (YES in step S044), in step S045, after extracting the document data containing the external link information for which the risk is detected, in step S046, user access to the extracted document data is prohibited. do. Next, in step S047, after replacing the external link information in the document data in which the risk is detected so as to be linked to the opened mirror site, in step S048, the user access to the document data for which access is prohibited is permitted. .

If no danger is detected in step S044 (NO in step S044), it is checked in step S049 whether or not there is already a mirror site. After opening, the mirror site information is added to the association table in step S051. If the mirror site already exists (YES in step S049), the mirror site is updated in step S052.

As described above, in the embodiment shown in the flowcharts of FIGS. 4 and 5, when no danger is detected in the external link information when the document data is stored in the folder 111, external links linked by the external link information A mirror site of the link destination is established, and if danger is not detected after that, the mirror site is updated, and if danger is detected, access to the document data is prohibited and external links After rewriting the information so that it links to the mirror site, access to the document data is permitted, so the operation for the destination user to link to the external link information that has been detected as dangerous Even if you do, you will be linked to a safe mirror site and will not be linked to a dangerous link destination, so you can improve safety while maintaining user convenience.

FIG. 6 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. In this embodiment, there is an access to stored document data, and when this document data is opened, it is configured to detect the presence or absence of risk of external link information.

In FIG. 6, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

In step S021, if it is not the regular check timing (NO in step S021), it is determined in step S061 whether or not the document data stored in the folder 111 has been accessed. If there is access (YES in step S061), it is checked in step S062 whether an instruction to open the document data has been given. If open is instructed (YES in step S062), the danger of external link information included in the document data is checked in step S063, and it is determined in step S064 whether or not there is danger. The risk of external link information may be checked by accessing the document data based on the access information of the storage destination of the document data and extracting the external link information. may be performed by referring to the association table and extracting the external link information.

If there is a risk (YES in step S064), opening of the document data is prohibited in step S065, and user access to the document data is prohibited in step S066.

Next, in step S067, the external link information for which the danger is detected is replaced with a state in which external linking is impossible by, for example, blacking out or imaging, and then in step S068, user access to the document data is permitted.

If there is no access to the document data in step S061 (NO in step S061), if there is no instruction to open the document data in step S062 (NO in step S062), and if there is no danger in the external link information in step S064 (NO in step S064), the process ends.

In this way, when the document data saved in the folder 111 is opened, it is detected whether or not the external link information in the document data is dangerous, and if the danger is detected, the document data is prohibited from being opened. At the same time, the external link information is rewritten to a state in which it is impossible to link to the outside, so it is possible to prevent the user from accessing dangerous link destinations.

FIG. 7 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. This embodiment is configured to detect the presence or absence of risk of external link information when stored document data is accessed and this document data is copied or moved.

In FIG. 7, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

In step S021, if it is not the regular check timing (NO in step S021), it is determined in step S071 whether or not the document data stored in the box 111 has been accessed. If there is access (YES in step S071), it is checked in step S072 whether an instruction to copy or move the document data has been issued. If copying or moving is instructed (YES in step S072), the danger of external link information included in the document data is checked in step S073, and it is determined whether or not there is danger in step S074.

If there is a risk (YES in step S074), copy or move of the document data is prohibited in step S075, and user access to the document data is prohibited in step S076.

Next, in step S077, the external link information for which the risk is detected is replaced with a state in which external linking is impossible by, for example, blacking out or imaging, and then in step S078, user access to the document data is permitted.

If there is no access to the document data in step S071 (NO in step S071), and if there is no instruction to copy or move the document data in step S072 (NO in step S072), the external link information is displayed in step S074. If there is no danger (NO in step S074), the process ends.

In this way, when the document data saved in the folder 111 is copied or moved, it is detected whether or not the external link information in the document data is dangerous. In addition to prohibiting movement, the external link information is rewritten to a state in which external links are not possible, thereby preventing users from accessing dangerous link destinations.

FIG. 8 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. In this embodiment, when a folder 111 in which document data is stored is accessed, it is configured to detect the presence or absence of risk for external link information included in all document data in the folder.

In FIG. 8, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

In step S021, if it is not the regular check timing (NO in step S021), it is determined in step S081 whether or not the folder 111 storing the document data has been accessed. If there is access (YES in step S081), the risk of external link information included in all the document data in the folder 111 is checked in step S082, and it is determined whether or not there is a risk in step S083.

If there is a risk (YES in step S083), user access to the document data containing the external link information for which the risk is detected is prohibited in step S084.

Next, in step S085, the external link information for which the risk is detected is replaced with a state in which external linking is impossible by, for example, blacking out or imaging. allow

If there is no access to the folder 111 in step S081 (NO in step S081), and if there is no danger in the external link information in step S083 (NO in step S083), the process ends.

In this way, when the folder 111 in which the document data is stored is accessed, the presence or absence of risk is detected for the external link information included in all the document data in the folder 111, and the risk is detected. In this case, the external link information is rewritten so that the external link is disabled, so that the user can be prevented from accessing the dangerous link destination.

FIG. 9 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. In this embodiment, there is an access to stored document data, and when this document data is opened, it is configured to detect the presence or absence of risk of external link information. For example.

In FIG. 9, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

In step S021, if it is not the regular check timing (NO in step S021), it is determined in step S091 whether or not the document data stored in the folder 111 has been accessed. If there is access (YES in step S091), it is checked in step S092 whether an instruction to open the document data has been given. If open is instructed (YES in step S092), the danger of external link information included in the document data is checked in step S093, and it is determined whether or not there is danger in step S094.

If there is a risk (YES in step S094), it is determined in step S095 whether the document data has already been opened. If it has not been opened yet (NO in step S095), after prohibiting opening of the document data in step S096, the process proceeds to step S097. If the document data has already been opened in step S095 (YES in step S095), the document data is forcibly closed in step S098, and then the process proceeds to step S097.

In step S097, user access to the document data is prohibited, and then, in step S099, the external link information for which the risk is detected is replaced with a state in which external linking is impossible by, for example, blacking out or imaging. At S100, user access to document data is granted.

If there is no access to the document data in step S091 (NO in step S091), if there is no instruction to open the document data in step S092 (NO in step S092), and if there is no danger in the external link information in step S094 (NO in step S094), the process ends.

In this way, when the document data saved in the folder 111 is opened, it is detected whether there is a danger in the external link information in the document data. If it is opened, it is forcibly closed, and external link information is rewritten so that external links are impossible, so users are prevented from accessing dangerous links. It can be prevented.

FIG. 10 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. In this embodiment, there is an access to stored document data, and when this document data is opened, it is detected whether or not there is a risk of external link information. is configured to prevent the

In FIG. 10, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

In step S021, if it is not the regular check timing (NO in step S021), it is determined in step S101 whether or not the document data stored in the folder 111 has been accessed. If there is access (YES in step S101), it is checked in step S102 whether an instruction to open the document data has been given. If open is instructed (YES in step S102), the danger of external link information included in the document data is checked in step S103, and it is determined whether or not there is danger in step S104.

If there is a risk (YES in step S104), document data having the same external link information is extracted in step S105. Extraction is performed by accessing each document data based on the access information of the storage destination of each document data and checking whether or not the same external link information is included. Next, in step S106, opening of all the extracted target document data is prohibited, and in step S107, user access to the document data is prohibited.

Next, in step S108, the external link information for which the risk is detected is replaced with a state in which external linking is impossible by, for example, blacking out or imaging, and then in step S109, user access to the document data is permitted.

If there is no access to the document data in step S101 (NO in step S101), if there is no instruction to open the document data in step S102 (NO in step S102), and if there is no danger in the external link information in step S104 (NO in step S104), the process ends.

In this way, when the document data saved in the folder 111 is opened, the presence or absence of risk is detected for the external link information in the document data, and if the risk is detected, the same external link information is included. In addition to prohibiting all document data from being opened, the external link information is rewritten so that external linking is disabled, thereby preventing users from accessing dangerous links.

FIG. 11 is a flow chart showing the operation of the MFP 1 when checking the risk of stored document data according to still another embodiment of the present invention. In this embodiment, when the risk of external link information is detected, a warning is sent to the user who sent the access information indicating the storage destination of the document data.

In FIG. 11, steps S021 to S028 are the same as steps S021 to S028 in the flowchart shown in FIG.

After permitting user access to the document data for which access is prohibited in step S028, in step S111, a warning mail is sent to the user who sent the access information of the target document data.

An example of the warning mail is shown in FIG. In this example, it is notified that the danger of the link destination of the external link information has been detected, that the user should be careful when accessing the link destination, that the document data stored in the folder 11 of the MFP 1 is safe, and so on. be done.

In this way, since the user is notified of the warning, the user can recognize that the link destination is dangerous.

FIG. 13 is a flow chart showing the operation of MFP 1 in still another embodiment of the invention. In this embodiment, before the MFP 1 prints the data to be printed on a recording medium such as paper by the image output device 140, it is determined whether or not external link information is included in the data to be printed.

In step S121, after the print data (data to be printed) is rasterized, the OCR section 190 performs character recognition processing.

In step S122, it is determined whether or not the text data (document data) created by the character recognition process includes external link information. If not included (NO in step S122), the process is terminated and print processing is executed. If it is included (YES in step S122), after saving the text data in step S123, in step S124, the external link information in the text data is extracted, associated with the print data and saved in the association table. do. Next, in step S125, the risk of the link destination of the extracted external link information, in other words, whether or not the link destination is infected with a virus is checked, and in step S126, it is determined whether or not the risk is detected.

If no danger is detected (NO in step S126), this process is terminated and print processing is executed. If danger is detected (YES in step S126), in step S127, the user who instructed printing is notified that there is danger in the external link information in the print data. The notification may be sent by e-mail, displayed on the display unit 134 of the operation panel 130, or printed out. After that, print processing is executed.

FIG. 14 is a flow chart showing the danger check process of the print target data from which the external link information is extracted, which is performed by the MFP1.

The MFP 1 regularly checks the risk of the link destination of the external link information, and checks in step S131 whether or not it is time for regular check. If it is not the scheduled check timing (NO in step S131), the process ends. If it is the regular check timing (YES in step S131), it is checked in step S132 if there is document data to be checked. If there is no document data to be checked (NO in step S132), the process ends. If there is document data to be checked (YES in step S132), in step S133, the risk of link destinations of all external link information in the association table is checked.

In step S134, it is determined whether or not danger is detected, and if no danger is detected (NO in step S134), the process ends. If a risk is detected (YES in step S134), in step S135, the user who printed the print data for which the risk was detected is extracted. Notify by e-mail that there is a danger.

As described above, in the embodiment shown in FIGS. 13 and 14, it is determined whether or not external link information is included in the data to be printed, and if it is determined that it is included, the link information is saved. . Since the presence or absence of danger in the saved link information is continuously detected after saving, if danger is detected, the user who performed the printing is notified that the link destination is dangerous. can prevent users from accessing dangerous links.

FIG. 15 is a flow chart showing the operation of MFP 1 in still another embodiment of the invention. In this embodiment, the MFP 1 converts image data of a document read by the image reading device 120 into searchable PDF data, which is an example of document data whose text information can be searched by character recognition processing, and sends the data to the destination by e-mail or the like. When transmitting, it is determined whether link information (external link information) that can be linked to the outside is included in the document data by a predetermined operation, and the operation is performed in accordance with the determination result.

When the user sets a document on the image reading device 120, designates a transmission destination on the operation panel 130, and issues a scan instruction, the image reading device 120 reads the document and obtains image data. The CPU 101 of the MFP 1 converts the obtained image data into searchable PDF data.

In step S141, it is checked whether searchable PDF data, which is document data, is to be sent to the outside. If not (NO in step S141), the process ends. If it is transmission processing (YES in step S141), it is determined in step S142 whether external link information is included in the text data of the searchable PDF data.

If external link information is not included in the text data of the searchable PDF data (NO in step S142), in step S149 the security software checks the searchable PDF data itself for viruses, and then in step S150 the searchable PDF data. is sent as an attached file to the specified destination by e-mail, and the process ends.

If external link information is included in the text data of the searchable PDF data (YES in step S142), in step S143 the searchable PDF data is saved in a predetermined folder 111 of the storage device 110, and the document data is protected by the security software. Do a virus check on it.

Next, in step S144, the external link information in the text data of the searchable PDF data is extracted, associated with the searchable PDF data, and stored in the association table. A risk, in other words, whether or not the link destination is infected with a virus is checked, and in step S146, it is determined whether or not a risk is detected.

If danger is detected (YES in step S146), in step S147, the external link information for which danger is detected is replaced (rewritten) by, for example, blacking out or imaging, and then the process proceeds to step S148. If no danger is detected (NO in step S146), the process proceeds directly to step S148.

In step S148, the storage destination information of the document data in the storage device 110, which is the access information to the document data, is inserted into the body of the mail and sent to the specified destination.

FIG. 16 is a flow chart showing the risk checking process of the searchable PDF data saved in step S143 of FIG.

The MFP 1 regularly checks the risk of the link destination of the external link information, and checks in step S161 whether or not it is the regular check timing. If it is not the scheduled check timing (NO in step S161), the process ends. If it is the scheduled check timing (YES in step S161), it is checked in step S162 if there is document data to be checked. If there is no document data to be checked (NO in step S162), the process ends. If there is document data to be checked (YES in step S162), in step S163, the risk of link destinations of all external link information in the association table is checked.

In step S164, it is determined whether or not danger is detected, and if no danger is detected (NO in step S164), the process ends. If a risk is detected (YES in step S164), in step S165, searchable PDF data including the external link information for which the risk is detected is extracted, and in step S166, user access to the extracted searchable PDF data is prohibited. banned. Next, in step S167, the external link information detected as dangerous in the searchable PDF data is replaced by, for example, blacking out or imaging, and then in step S168, user access to the document data for which access is prohibited is permitted.

As described above, according to the embodiments of FIGS. 15 and 16, image data obtained by reading a document is converted into searchable PDF data that allows text information to be searched by character recognition processing, and the converted searchable PDF data is converted into searchable PDF data. PDF data is sent to the destination. On the other hand, it is determined whether the searchable PDF data contains link information that can be linked to the outside by a predetermined operation, and if it is determined that the link information is included, the link information is saved. Then, since the presence or absence of danger in the saved link information is continuously detected after saving, for example, when danger is detected, the link destination is dangerous to the user to whom the searchable PDF data is sent. It is possible to take measures such as notifying the user of the fact, thereby preventing the user from accessing dangerous links.

FIG. 17 is a flow chart showing the operation of MFP 1 in still another embodiment of the invention. In this embodiment, the MFP 1 converts image data of a document read by the image reading device 120 into searchable PDF data, which is an example of document data whose text information can be searched by character recognition processing, and stores the data in the storage device 110 . In this case, it is determined whether or not the document data contains link information (external link information) that can be linked to the outside by a predetermined operation, and processing is executed according to the determination result.

When the user sets a document on the image reading device 120, designates a storage destination on the operation panel 130, and issues a scan instruction, the image reading device 120 reads the document and obtains image data. The MFP 1 converts the obtained image data into searchable PDF data.

In step S171, searchable PDF data, which is document data, is stored in a designated storage destination, such as a folder called a box in the storage device 110, for example.

Next, in step S172, it is determined whether external link information is included in the text data of the searchable PDF data. If external link information is not included in the text data of the searchable PDF data (NO in step S172), the process ends.

If external link information is included in the text data of the searchable PDF data (YES in step S172), in step S173 the external link information in the text data of the searchable PDF data is extracted and associated with the searchable PDF data. and save it in the association table, in step S174, the risk of the link destination of the extracted external link information, in other words, whether or not the link destination is infected with a virus, is checked in step S175. determine whether it has detected

If danger is detected (YES in step S175), the external link information for which danger is detected is deleted in step S176, and the process ends. Deletion of the external link information makes it impossible to search for the link information and prevents the user from accessing the destination of the external link information.

FIG. 18 is a flow chart showing risk check processing of searchable PDF data having external link information extracted in step S173 of FIG.

The MFP 1 regularly checks the danger of the link destination of the external link information, and checks in step S181 if it is time for regular check. If it is not the scheduled check timing (NO in step S181), the process ends. If it is the regular check timing (YES in step S181), it is checked in step S182 if there is searchable PDF data to be checked. If there is no searchable PDF data to be checked (NO in step S182), the process ends. If there is searchable PDF data to be checked (YES in step S182), in step S183, the risk of link destinations of all external link information in the association table is checked.

In step S184, it is determined whether or not danger is detected, and if no danger is detected (NO in step S184), the process ends. If a risk is detected (YES in step S184), in step S185, after extracting searchable PDF data containing the external link information for which the risk is detected, in step S186, user access to the extracted searchable PDF data is prohibited. banned. Next, in step S187, the external link information in which the risk is detected in the searchable PDF data is deleted. Deletion of the external link information makes it impossible to search for the link information and prevents the user from accessing the destination of the external link information.

Next, in step S188, user access to the prohibited searchable PDF data is permitted.

As described above, in the embodiments of FIGS. 17 and 18, image data obtained by reading a document is converted into searchable PDF data by character recognition processing, and the converted searchable PDF data is converted to searchable PDF data. is saved. On the other hand, it is determined whether external link information is included in the searchable PDF data, and if it is determined that external link information is included, the external link information is saved. Then, since the presence or absence of danger in the saved link information is continuously detected after saving, for example, when danger is detected, it is possible to take measures such as deleting the external link information, and the user can Prevents access to dangerous links.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, although the case where the data processing device is an MFP has been described, it may be an image forming device other than the MFP, another image processing device, or an information processing device such as a personal computer or a tablet terminal.

In addition, document data including external link information and the association table of external link information are stored in the storage device 110 of the MFP 1. However, they are stored in an external device such as a data server other than the MFP 1, and if necessary, the MFP 1 may be configured to acquire information such as an association table of document data and external link information stored from an external device.

1 Data processing device (image forming device)
100 control unit 101 COU
102 ROMs
110 storage device 111 folder 120 image reading device 130 operation panel 134 display unit 140 image output device 160 network interface 180 authentication unit 190 OCR unit

Claims (20)

determining means for determining whether or not document data to be transmitted includes link information that can be linked externally by a predetermined operation;
storage means provided in the device itself or an external device for storing the document data when the determination means determines that the link information is included in the document data;
If the determining means determines that the link information is not included in the document data, the document data is transmitted to the destination, and if it is determined that the link information is included in the document data, a transmission means for transmitting access information to the document data stored in the storage means to a transmission destination;
risk detection means for detecting whether or not the link information included in the document data is risky when the document data is stored in the storage means and continuously after the document data is stored;
When the risk detection means detects a risk of the link information, the link information is rewritten so that the link information cannot be linked to the outside, and the link information is transmitted after the access information is transmitted by the transmission means. a control means for rewriting the link information in a state in which access to the document data containing the link information is prohibited when a risk is detected, and then permitting access to the document data;
A data processing device comprising: The control means establishes a mirror site of the link destination of the link information if the risk detection means detects no risk of the link information when the document data is saved in the saving means. ,
In the subsequent risk detection by the risk detection means, if the risk is not detected, the mirror site is updated, and if the risk is detected, the access to the document data is prohibited and the link information is transmitted. 2. The data processing apparatus according to claim 1, wherein access to document data is permitted after rewriting so as to be linked to said mirror site. 3. The data according to claim 1 or 2, wherein said risk detection means monitors the frequency of access to document data and access to link information in document data, and detects the presence or absence of risk according to the access frequency. processing equipment. The risk detection means detects whether or not the link information in the document data is at risk when the document data stored in the storage means is opened, and when the risk is detected, the control means is configured to: 4. The data processing apparatus according to any one of claims 1 to 3, wherein opening of said document data is prohibited. The risk detection means detects whether or not there is a risk of link information in the document data when the document data stored in the storage means is copied or moved. 4. The data processing apparatus according to any one of claims 1 to 3, wherein said means prohibits copying or movement of said document data. The risk detection means detects the presence or absence of risk in the link information in the document data stored in the storage means when the storage means is accessed, and the control means detects the risk. 4. The data processing apparatus according to any one of claims 1 to 3, wherein the document data is prohibited from being opened. The risk detection means detects the presence or absence of risk in the link information in the document data after the document data stored in the storage means is opened, and when the risk is detected, the control means 4. The data processing apparatus according to any one of claims 1 to 3, wherein an instruction is given to close the document data. When the risk detection means detects a risk of the link information included in the document data stored in the storage means, the control means prohibits access to other document data including the same link information. The data processing device according to any one of claims 1 to 7. 9. The data processing apparatus according to any one of claims 1 to 8, wherein said risk detection means detects whether or not said link information has a risk by checking the risk of a link destination indicated by said link information. 10. The data processing apparatus according to any one of claims 1 to 9, wherein said control means notifies a user of a warning when said risk detection means detects a risk with respect to said link information. 11. The data processing apparatus according to any one of claims 1 to 10, further comprising setting means for setting a time limit for detecting the presence or absence of danger by said danger detection means. a printing means for printing data to be printed on a recording medium;
Character recognition processing means for performing character recognition processing on the data to be printed before printing by the printing means;
determination means for determining whether or not the print target data contains link information that can be linked externally by a predetermined operation, based on the result of character recognition processing by the character recognition processing means;
storage means provided in the device itself or an external device for storing the link information when the determination means determines that the link information is included in the document data;
risk detection means for continuously detecting whether or not the saved link information is dangerous after being saved in the saving means;
A data processing device comprising: 12. A warning notification means for notifying a user who has printed data to be printed containing the link information when the risk detection means detects a risk for the link information. The data processing device according to . data conversion means for converting image data obtained by reading a document into text information searchable document data by character recognition processing;
a transmitting means for transmitting the document data converted by the data converting means to a destination;
determining means for determining whether or not the document data includes link information that can be linked to an external device by a predetermined operation;
storage means provided in the device itself or an external device for storing the link information when the determination means determines that the link information is included in the document data;
risk detection means for continuously detecting whether or not the saved link information is dangerous after being saved in the saving means;
A data processing device comprising: data conversion means for converting image data obtained by reading a document into text information searchable document data by character recognition processing;
document data storage means provided in the device or an external device for storing the document data converted by the data conversion means;
determining means for determining whether or not the document data includes link information that can be linked to an external device by a predetermined operation;
link information storage means provided in the device or an external device for storing the link information when the determination means determines that the link information is included in the document data;
risk detection means for continuously detecting whether or not the saved link information is risky after being saved in the link information saving means;
A data processing device comprising: 16. The method according to claim 15, further comprising control means for disabling retrieval of said link information for document data containing said link information when said risk detection means detects danger for said link information. data processing equipment. a determination step of determining whether or not the document data to be transmitted includes link information that can be linked to the outside by a predetermined operation;
a storing step of storing the document data in a storing means provided in the device itself or an external device when it is determined in the determining step that the link information is included in the document data;
If the determining step determines that the link information is not included in the document data, the document data is transmitted to the destination, and if it is determined that the link information is included in the document data, a transmission step of transmitting access information to the document data stored in the storage means to a transmission destination;
a danger detection step of detecting whether or not the link information included in the document data is at risk during and continuously after the document data is stored in the storage means;
When the risk detection step detects a risk with respect to the link information, access to the document data containing the link information is prohibited, and the link information is placed in a state in which it cannot be linked to the outside. a control step for permitting access to document data after rewriting;
A data processing program for causing the computer of the data processing device to execute. a printing means for printing data to be printed on a recording medium;
Character recognition processing means for performing character recognition processing on the data to be printed before printing by the printing means;
to the computer of the data processing device equipped with
a determination step of determining whether or not the data to be printed includes link information that can be linked externally by a predetermined operation, based on the result of the character recognition processing by the character recognition processing means;
a saving step of saving the link information in a saving means provided in the own device or an external device when it is decided in the determining step that the link information is included in the document data;
a risk detection step of continuously detecting whether or not the saved link information is dangerous after being saved in the saving means;
A data processing program for executing a data conversion step of converting image data obtained by reading a document into text information searchable document data by character recognition processing;
a transmission step of transmitting the document data converted by the data conversion step to a destination;
a determination step of determining whether or not the document data includes link information that can be linked externally by a predetermined operation;
a saving step of saving the link information in a saving means provided in the own device or an external device when it is decided in the determining step that the link information is included in the document data;
a danger detection step of continuously detecting whether or not the saved link information is dangerous after being saved in the saving means;
A data processing program for causing the computer of the data processing device to execute. a data conversion step of converting image data obtained by reading a document into text information searchable document data by character recognition processing;
a document data saving step of saving the document data converted by the data conversion step in document data saving means provided in the device or an external device;
a determination step of determining whether or not the document data includes link information that can be linked externally by a predetermined operation;
a link information saving step of saving the link information in link information saving means provided in the device itself or an external device when it is determined in the determining step that the link information is included in the document data; ,
a risk detection step of continuously detecting whether or not the saved link information is at risk after being stored in the link information storage means;
A data processing program for causing the computer of the data processing device to execute.

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