JP5521878B2 - Document processing apparatus, document processing method, and program - Google Patents

Description

  The present invention relates to a document processing apparatus including a storage device that stores a document.

  2. Description of the Related Art A document processing apparatus including a storage device that stores (represents information) including a character string and / or a document including a graphic is known. As one example of this type of document processing apparatus, the document processing apparatus described in Patent Document 1 has a file system including a plurality of directories (folders) having a hierarchical (tree) structure.

  The document processing apparatus stores the document in a state where each document is arranged in any directory. For each directory, the document processing apparatus calculates a directory risk level indicating the ease of information leakage from the directory. Then, the document processing apparatus displays a list of directories arranged in descending order of the calculated directory risk level. According to this, the user can easily recognize a directory where information is easily leaked.

JP 2006-209649 A

  By the way, the document risk level indicating the ease of information leakage from a document differs depending on the information included in the document. For example, when the document is text data, information is more likely to leak than when the document is binary data. Therefore, even if the document is located in a directory where information is difficult to leak, if the document risk level is relatively high, the state of the document can be said to be a dangerous state where information is likely to leak. it can.

  However, since the document processing apparatus outputs information corresponding to the directory risk level for each directory, there is a possibility that a document in a dangerous state cannot be specified with high accuracy.

  For this reason, an object of the present invention is to provide a document processing apparatus that can solve the above-described problem that “a document that is in a dangerous state cannot be identified with high accuracy”. There is.

  In order to achieve such an object, a document processing apparatus according to an embodiment of the present invention has a file system including a plurality of directories having a hierarchical structure and stores a document arranged in one of the plurality of directories. It is an apparatus provided with.

Furthermore, this document processing device
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the risk of leakage of information included in the document,
Directory risk level calculation means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The directory state is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying whether the intermediate state is a state other than the safe state based on the calculated directory risk,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
Is provided.

A document processing method according to another aspect of the present invention includes:
The present invention is applied to a document processing apparatus that has a file system including a plurality of directories having a hierarchical structure and includes a storage device that stores a document arranged in one of the plurality of directories.
For the above document, calculate a document risk level, which is a risk level indicating the ease of leakage of information contained in the document,
For the above directory, calculate the directory risk, which is the risk that indicates the ease of leaking information from the documents placed in the directory,
The directory state is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Based on the calculated directory risk, whether the intermediate state is a state other than the safe state,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, This is a method of specifying based on the calculated document risk level.

Moreover, the program which is the other form of this invention is:
An information processing apparatus having a file system including a plurality of directories having a hierarchical structure and including a storage device that stores a document arranged in one of the plurality of directories.
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the risk of leakage of information included in the document,
Directory risk level calculation means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The directory state is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying whether the intermediate state is a state other than the safe state based on the calculated directory risk,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
It is a program for realizing.

  By configuring as described above, the present invention can identify a document in a dangerous state with high accuracy.

It is the block diagram which showed the function of the document processing apparatus which concerns on 1st Embodiment of this invention. It is the flowchart which showed the authority calculation program which CPU of the document processing apparatus concerning 1st Embodiment of this invention performs. It is explanatory drawing which showed notionally the document risk level and directory risk level which the document processing apparatus concerning 1st Embodiment of this invention calculates. It is the flowchart which showed the state specific program which CPU of the document processing apparatus concerning 1st Embodiment of this invention performs. It is explanatory drawing which showed notionally the document risk level and directory risk level which the document processing apparatus concerning 1st Embodiment of this invention calculates. It is the flowchart which showed the arrangement | positioning process execution program which CPU of the document processing apparatus concerning 1st Embodiment of this invention performs. It is the block diagram which showed the function of the document processing apparatus which concerns on 2nd Embodiment of this invention.

  Hereinafter, embodiments of a document processing apparatus, a document processing method, and a program according to the present invention will be described with reference to FIGS.

<First Embodiment>
(Constitution)
As shown in FIG. 1, the document processing apparatus 1 according to the first embodiment is a personal computer as an information processing apparatus. The document processing device 1 may be a server device, a mobile phone terminal, a PHS (Personal Handyphone System), a PDA (Personal Data Assistance, Personal Digital Assistant), a car navigation terminal, or a game terminal.

  The document processing apparatus 1 includes a central processing unit (CPU; Central Processing Unit), a storage device (memory and hard disk drive (HDD)), an input device, and an output device (not shown). The document processing apparatus 1 has a file system including a plurality of directories having a hierarchical structure.

  The storage device stores a file arranged in one of a plurality of directories according to a file system. Each directory has a name (directory name). In addition, for each directory, an access right that determines a user who is permitted to access (read, write, etc.) the directory is set. Similarly, each file has a name (file name). In addition, for each file, an access authority that determines a user who is permitted to access (read, write, etc.) the file is set.

The output device has a display. The output device displays an image made up of characters, graphics, and the like on the display based on the image information output from the CPU.
The input device has a keyboard and a mouse. The document processing apparatus 1 is configured such that information based on user operations is input via a keyboard and a mouse.

  The document processing apparatus 1 is configured to realize functions to be described later when a CPU executes a program stored in a storage device.

(function)
FIG. 1 is a block diagram showing the functions of the document processing apparatus 1 configured as described above.
The functions of the document processing apparatus 1 are a document storage unit 11, a document risk level calculation unit (document risk level calculation unit) 12, a keyword storage unit 13, a directory risk level calculation unit (directory risk level calculation unit) 14, Directory state specifying unit (directory state specifying unit) 15, state storage unit 16, document state specifying unit (document state specifying unit) 17, dangerous document notification unit (dangerous document notification unit) 18, and dangerous directory notification unit ( A danger directory notifying unit) 19, an instruction information receiving unit (instruction information receiving unit) 20, an arrangement process executing unit (arrangement process executing unit) 21, an arrangement process suppressing unit (first arrangement process suppressing unit, and first 2 arrangement processing suppression means) 22. Each of the document storage unit 11, the keyword storage unit 13, and the state storage unit 16 is a function realized by a storage device.

  The document storage unit 11 stores a document (document information representing a document) as a file arranged in one of a plurality of directories constituting the file system. The document includes a character string. The document processing apparatus 1 may be configured to include a character string as metadata and use image information representing a still image or a moving image as a document.

  The document risk level calculation unit 12 calculates, for each document stored in the document storage unit 11, a risk level (document risk level) indicating the ease of leakage of information included in the document. In this example, the document risk level calculation unit 12 calculates the document risk level using the method described in Patent Document 1 described above.

  Specifically, the document risk level calculation unit 12 includes a criterion for whether or not the document includes a preset keyword (keyword match), a criterion for whether or not the document includes a preset regular expression, The document risk level is calculated on the basis of whether or not the document includes a preset image (for example, a graphic and a graph) and the access authority set for the document. For example, the document risk level calculation unit 12 calculates a value that increases as the number of users permitted to access a document increases as the document risk level.

  The keyword storage unit 13 stores keywords input by the user via the input device. The keyword storage unit 13 stores a keyword and correction direction information indicating the correction direction in association with each other. The direction of correction is a direction to increase the directory risk or a direction to decrease the directory risk.

  The directory risk level calculation unit 14 calculates a risk level (directory risk level) representing the ease of information leakage from a document placed in the directory for each of a plurality of directories constituting the file system.

  In this example, first, the directory risk level calculation unit 14 calculates the average value of the document risk levels calculated by the document risk level calculation unit 12 for the documents arranged in the directory that is the target of the directory risk level calculation process. Is calculated as the directory risk level for the directory.

  Furthermore, when the directory name includes a keyword stored in the keyword storage unit 13, the directory risk level calculation unit 14 corrects the directory risk level calculated for the directory. The directory risk level calculation unit 14 corrects the directory risk level according to the correction direction indicated by the correction direction information stored in association with the keyword. In this example, the directory risk level calculator 14 corrects (increases or decreases) the directory risk level by a preset correction amount.

  By the way, the state of a directory has a strong correlation with the name of the directory. Therefore, by configuring the document processing apparatus 1 in this way, the directory risk can be calculated with high accuracy.

  Further, the directory risk level calculation unit 14 corrects the directory risk level calculated for the directory based on the authority level. The authority level is a value that is set for a directory and represents the ease of accessing a document placed in the directory.

  In this example, the authority level is a value obtained by dividing the number of users permitted to access the directory by the total number of users using the document processing apparatus 1. That is, the authority is a real number from 0 to 1. An increase in authority corresponds to an increase in the number of users permitted to access the directory.

  Specifically, first, the directory risk level calculation unit 14 calculates the authority level for each of a plurality of directories constituting the file system. The directory risk level calculation unit 14 corrects the directory risk level by a value obtained by multiplying the directory risk level calculated (corrected) for the directory by the authority level calculated for the directory. As a result, the directory risk level is corrected so as to decrease as the directory risk level for a directory with a small number of users permitted to access.

  By the way, the state of a directory has a strong correlation with the ease of accessing documents placed in the directory. Therefore, by configuring the document processing apparatus 1 in this way, the directory risk can be calculated with high accuracy.

  Furthermore, the directory risk level calculation unit 14 corrects the directory risk level calculated for a directory based on the directory risk level calculated for a directory higher than the directory.

  Specifically, the directory risk level calculation unit 14 performs correction processing on each directory in order from the top directory to the bottom. In this correction process, the directory risk level (target risk level) calculated for the directory that is the target of the correction process is higher than the directory risk level (higher risk level) calculated for the upper directory of the directory. This is a process of correcting the target risk level to the same value as the higher level risk level when the risk is small.

  By the way, the state of a directory has a strong correlation with the state of a directory above the directory. Therefore, by configuring the document processing apparatus 1 in this way, the directory risk can be calculated with high accuracy.

  For each of a plurality of directories constituting the file system, the directory status specifying unit 15 determines whether the directory status is in a dangerous state, a safe state, or an intermediate state, and the directory risk level calculating unit 14 Based on the directory risk calculated by the above.

  The dangerous state is a state in which information is easily leaked from a document placed in the directory. The safe state is a state in which information is not easily leaked from a document placed in the directory. The intermediate state is a state other than the dangerous state and the safe state.

  In this example, if the directory risk level calculated for the directory is greater than a preset first threshold (0.8 in this example), the directory status specifying unit 15 determines that the status of the directory is Identify a hazardous condition. Further, when the directory risk degree calculated for the directory is smaller than a preset second threshold value (0.2 in this example), the directory state specifying unit 15 sets the directory state to the safe state. To be identified. The second threshold value is smaller than the first threshold value.

  The state storage unit 16 stores directory state information indicating the state of the directory specified by the directory state specifying unit 15.

  For each of the documents stored in the document storage unit 11, the document state specifying unit 17 determines whether the state of the document is a dangerous state or a non-dangerous state. Is specified based on the state of the directory specified by the document risk and the document risk level calculated by the document risk level calculation unit 12. The dangerous state is a state in which information is easily leaked from a document. A non-dangerous state is a state other than a dangerous state.

  Specifically, when any one of the first condition to the third condition is satisfied, the document state specifying unit 17 determines that the state of the document (processing target document) that is the target of the state specifying process is the dangerous state. When none of the first condition to the third condition is satisfied, it is specified that the state of the processing target document is a non-dangerous state.

The first condition is that the state of the directory in which the processing target document is arranged is specified as a dangerous state or an intermediate state, and the document risk calculated for the processing target document is The condition is that it is greater than the calculated directory risk.
The second condition is a condition that the state of the directory in which the processing target document is arranged is identified as a dangerous state.
The third condition is a condition that the document risk calculated for the processing target document is larger than a preset document risk threshold (0.9 in this example).

  The state storage unit 16 stores document state information representing the state of the document specified by the document state specifying unit 17.

  Based on the document state information stored in the state storage unit 16, the dangerous document notification unit 18 notifies the user of the document specified by the document state specifying unit 17 as being in a dangerous state. Specifically, the dangerous document notification unit 18 includes information for identifying a document whose state is identified as a dangerous state (for example, a file path), and information indicating that the state is a dangerous state. Are associated and output via the output device. According to this, it is possible to make the user recognize a document whose state is dangerous. As a result, user convenience can be improved.

  The dangerous directory notification unit 19 notifies the user of the directory specified by the directory state specifying unit 15 as being in a dangerous state based on the directory state information stored in the state storage unit 16.

  Specifically, the dangerous directory notifying unit 19 includes information for identifying a directory whose state is identified as a dangerous state (for example, a directory path), and information indicating that the state is a dangerous state. Are associated and output via the output device. According to this, it is possible to make the user recognize a directory whose state is dangerous. As a result, user convenience can be improved.

  The instruction information receiving unit 20 receives instruction information input by the user via the input device. The instruction information is information that instructs to newly arrange a document as an arrangement document in an arrangement destination directory that is one of a plurality of directories.

  When the instruction information is received by the instruction information receiving unit 20, the arrangement process executing unit 21 executes an arrangement process for newly arranging the arrangement document in the arrangement destination directory. Specifically, the arrangement process execution unit 21 executes a process for storing the arrangement document as a file arranged in the arrangement destination directory in the document storage unit 11 as the arrangement process.

The arrangement process suppressing unit 22 determines that the arrangement process is performed by the arrangement process executing unit 21 when the arrangement document is identified as being in a dangerous state and the arrangement destination directory is identified as being in a dangerous state or an intermediate state. Execution is suppressed (in this example, prohibited).
According to this, it is possible to prevent an increase in the number of documents in a dangerous state.

Further, the placement process suppression unit 22 suppresses (in this example, prohibition) execution of the placement process by the placement process execution unit 21 when the placement destination directory is identified as being in a dangerous state.
According to this, it is possible to prevent an increase in the number of documents in a dangerous state.

  In addition, when the execution of the arrangement process is suppressed, the arrangement process suppressing unit 22 notifies the user to that effect. Specifically, when the placement process suppression unit 22 suppresses the execution of the placement process, the placement process suppression unit 22 outputs suppression notification information indicating that fact via the output device.

(Operation)
Next, the operation of the document processing apparatus 1 described above will be described.
The CPU of the document processing apparatus 1 executes the authority level calculation program shown by the flowchart in FIG.

  Specifically, when the processing of the authority level calculation program is started, the document processing apparatus 1 receives a keyword and correction direction information input by the user via the input device. Then, the document processing apparatus 1 stores the received keyword and the correction direction information in the storage device in association with each other (that is, sets the keyword) (step S101).

  Next, the document processing apparatus 1 receives access authority information that is input by the user via the input device and that represents access authority for each of the plurality of directories that constitute the file system. Then, the document processing apparatus 1 stores the received access authority information in the storage device (that is, sets the access authority) (step S102).

Then, the document processing apparatus 1 calculates the authority level for each of a plurality of directories constituting the file system based on the stored access authority information (step S103). For example, as shown in FIG. 3A, the document processing apparatus 1 calculates 0.9 as the authority for the directory A.
Thereafter, the document processing apparatus 1 ends the processing of the authority level calculation program.

  Further, the CPU of the document processing apparatus 1 executes the state specifying program shown by the flowchart in FIG.

  More specifically, when the processing of the state specifying program is started, the document processing apparatus 1 calculates a document risk level for each of the documents stored in the storage device (step S201). For example, as shown in FIG. 3B, the document processing apparatus 1 calculates 0.7 as the document risk level for the document 1 arranged in the directory A, and 0.5 as the document risk level for the document 2. Is calculated.

  Next, for each of a plurality of directories constituting the file system, the document processing apparatus 1 uses, as the directory risk level for the directory, an average value of the document risk levels calculated for the documents arranged in the directory. Calculate (step S202). For example, the document processing apparatus 1 calculates 0.8 as the directory risk level for the directory A as shown in FIG.

  Next, in step S202, the document processing apparatus 1 determines, for each of a plurality of directories constituting the file system, based on the name of the directory, keywords and correction direction information stored in the storage device. The calculated directory risk level is corrected (step S203).

  Next, the document processing apparatus 1 corrects the directory risk level corrected in step S203 for each of a plurality of directories constituting the file system based on the authority level calculated for the directory ( Step S204). For example, the document processing apparatus 1 calculates 0.72 as the directory risk level for the directory A, as shown in FIG.

  Then, the document processing apparatus 1 sets the directory risk level corrected in step S204 for each of a plurality of directories constituting the file system to the directory risk level calculated for the directory above the directory. Based on this, correction is performed (step S205).

  Next, in step S205, the document processing apparatus 1 corrects, for each of a plurality of directories constituting the file system, whether the directory state is a dangerous state, a safe state, or an intermediate state. The directory risk is specified based on the specified directory risk (step S206).

  Now, as shown in FIG. 5, the directory risk level for the directory A is 0.9, the directory risk level for the directory B is 0.08, and the directory risk level for the directory C is 0.5. Suppose. Further, as described above, it is assumed that the first threshold is 0.8 and the second threshold is 0.2. In this case, the document processing apparatus 1 specifies that the state of the directory A is a dangerous state, the state of the directory B is a safe state, and the state of the directory C is an intermediate state.

  Then, in step S206, the document processing apparatus 1 identifies, for each document stored in the storage device, whether the state of the document is a dangerous state or a non-dangerous state. Specified based on the directory status and the document risk calculated in step S201 (step S207).

  Now, as shown in FIG. 5, it is assumed that the document risk level for the document 10 is 1.0 and the document risk level for the document 28 is 0.7. Further, as described above, it is assumed that the document danger threshold is 0.9.

  In this case, since the document processing apparatus 1 is arranged in the directory A whose state is dangerous, each of the documents 1 to 9 is identified as dangerous. Furthermore, the document processing apparatus 1 specifies that the state of the document 10 is a dangerous state because the document risk level is greater than the document risk threshold. In addition, the document processing apparatus 1 is arranged in the directory C in which the state is an intermediate state, and the document risk level is greater than the directory risk level of the directory C. Therefore, the document processing apparatus 1 specifies that the state of the document 28 is a dangerous state. .

  Next, in step S207, the document processing apparatus 1 notifies the user of the document identified as being in a dangerous state (step S208). In step S206, the document processing apparatus 1 notifies the user of the directory identified as being in a dangerous state (step S209). Thereafter, the document processing apparatus 1 ends the processing of the state specifying program.

  Further, the CPU of the document processing apparatus 1 executes an arrangement process execution program shown by a flowchart in FIG.

  Specifically, when the processing of the arrangement processing execution program is started, the document processing apparatus 1 waits until instruction information is received (step S301). When the document processing apparatus 1 receives the instruction information input by the user, the document processing apparatus 1 determines “Yes” and proceeds to step S302.

Next, the document processing apparatus 1 determines whether or not the state of the placement destination directory indicated by the instruction information is identified as a dangerous state (step S302).
Assume that the state of the placement destination directory is identified as a dangerous state. In this case, the document processing apparatus 1 determines “Yes”, proceeds to step S304, and outputs the suppression notification information via the output apparatus.

  Then, the document processing apparatus 1 returns to step S301 without executing the arrangement process, and repeatedly executes the processes of steps S301 to S305.

  Next, a case is assumed in which the state of the placement destination directory is specified as not dangerous. In this case, the document processing apparatus 1 determines “No” in step S302 and proceeds to step S303.

Then, the document processing apparatus 1 determines whether or not the state of the arrangement destination directory is specified as the intermediate state and the state of the arrangement document is specified as the dangerous state (step S303).
Assume that the arrangement destination directory is identified as being in an intermediate state, and the arrangement document is identified as being in a dangerous state. In this case, the document processing apparatus 1 determines “Yes”, proceeds to step S304, and outputs the suppression notification information via the output apparatus.

  Then, the document processing apparatus 1 returns to step S301 without executing the arrangement process, and repeatedly executes the processes of steps S301 to S305.

  Next, it is assumed that the state of the placement destination directory is specified as a safe state, or the state of the placement document is specified as a non-dangerous state. In this case, the document processing apparatus 1 determines “No” in step S303 and proceeds to step S305.

  Then, the document processing apparatus 1 executes an arrangement process. Thereafter, the document processing apparatus 1 returns to step S301, and repeatedly executes the processes of steps S301 to S305.

  As described above, according to the document processing apparatus 1 according to the first embodiment of the present invention, even when a document is placed in a directory where information is difficult to leak, the document risk level is relatively high. Can specify that the state of the document is a dangerous state in which information is easily leaked. That is, it is possible to specify a document in a dangerous state with high accuracy.

  Furthermore, the document processing apparatus 1 according to the first embodiment has a document risk level calculated for a document placed in the directory when the directory state is identified as a dangerous state or an intermediate state. When the degree of directory risk calculated for the directory is larger, the state of the document is specified as a dangerous state.

  By the way, when the state of the directory is not safe and the document risk level of the document placed in the directory is larger than the directory risk level of the directory, information is likely to leak from the document. Therefore, according to the document processing apparatus 1, it is possible to specify a document in a dangerous state with high accuracy.

Furthermore, when the document processing apparatus 1 according to the first embodiment specifies that the state of the directory is a dangerous state, the document processing device 1 specifies that the state of the document arranged in the directory is a dangerous state.
By the way, when the directory is in a dangerous state, information is likely to be leaked from a document placed in the directory. Therefore, according to the document processing apparatus 1, it is possible to specify a document in a dangerous state with high accuracy.

Furthermore, the document processing apparatus 1 according to the first embodiment specifies that the state of the document is a dangerous state when the document risk level calculated for the document is larger than a preset document risk threshold.
By the way, regardless of the state of the directory where the document is arranged, information is likely to be leaked from a document having a relatively high document risk level. Therefore, according to the document processing apparatus 1, it is possible to specify a document in a dangerous state with high accuracy.

  The function of the document processing apparatus 1 according to the modification of the first embodiment may not include the dangerous document notification unit 18 and the dangerous directory notification unit 19. Further, the function of the document processing apparatus 1 according to the modification of the first embodiment may not include the arrangement processing suppression unit 22.

Second Embodiment
Next, a document processing apparatus according to a second embodiment of the present invention will be described with reference to FIG.
The document processing apparatus 100 according to the second embodiment is an apparatus that includes a file system including a plurality of directories having a hierarchical structure, and includes a storage device that stores a document arranged in one of the plurality of directories.

Further, the document processing apparatus 100 includes:
A document risk level calculation unit (document risk level calculation means) 101 that calculates a document risk level, which is a risk level indicating the risk of information leakage included in the document,
A directory risk level calculation unit (directory risk level calculation means) 102 that calculates a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The directory state is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state A directory state specifying unit (directory state specifying means) 103 for specifying an intermediate state that is a state other than the safe state based on the calculated directory risk,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying unit (document state specifying means) 104 for specifying based on the calculated document risk,
Is provided.

  According to this, even if a document is placed in a directory where information is difficult to leak, if the document risk level is relatively high, the state of the document is a dangerous state where information is likely to leak. Can be identified. That is, it is possible to specify a document in a dangerous state with high accuracy.

  Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above-described embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  In each of the above embodiments, each function of the document processing apparatus is realized by the CPU executing a program (software), but may be realized by hardware such as a circuit.

  In each of the above embodiments, the program is stored in the storage device, but may be stored in a computer-readable recording medium. For example, the recording medium is a portable medium such as a flexible disk, an optical disk, a magneto-optical disk, and a semiconductor memory.

  In addition, as another modified example of the above-described embodiment, any combination of the above-described embodiments and modified examples may be employed.

<Appendix>
A part or all of the above embodiment can be described as the following supplementary notes, but is not limited thereto.

(Appendix 1)
A document processing apparatus having a file system including a plurality of directories having a hierarchical structure, and having a storage device for storing documents arranged in one of the plurality of directories,
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the likelihood of leakage of information contained in the document,
Directory risk level calculating means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying, based on the calculated directory risk level, an intermediate state that is a state other than the safe state;
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
A document processing apparatus comprising:

  According to this, even if the document is placed in a directory where information is difficult to leak, if the document risk level is relatively high, the state of the document is a dangerous state where information is likely to leak. Can be identified. That is, it is possible to specify a document in a dangerous state with high accuracy.

(Appendix 2)
The document processing apparatus according to attachment 1, wherein
The document status specifying means, when the status of the directory is specified as the dangerous status or the intermediate status, the document risk level calculated for the document arranged in the directory is the directory status. A document processing apparatus configured to specify that the state of the document is the dangerous state when the degree of risk of the directory is greater than the calculated directory risk level.

  By the way, when the state of the directory is not safe and the document risk level of the document placed in the directory is larger than the directory risk level of the directory, information is likely to leak from the document. Therefore, by configuring the document processing apparatus as described above, it is possible to specify a document in a dangerous state with high accuracy.

(Appendix 3)
A document processing apparatus according to appendix 1 or appendix 2,
The document status specifying unit is configured to specify that the status of a document placed in the directory is the dangerous status when the status of the directory is specified as the dangerous status. .

  By the way, when the directory is in a dangerous state, information is likely to be leaked from a document placed in the directory. Therefore, by configuring the document processing apparatus as described above, it is possible to specify a document in a dangerous state with high accuracy.

(Appendix 4)
A document processing apparatus according to any one of appendix 1 to appendix 3,
The document state specifying unit is configured to specify that the state of the document is the dangerous state when the document risk calculated for the document is larger than a preset document risk threshold. Document processing device.

  By the way, regardless of the state of the directory where the document is arranged, information is likely to be leaked from a document having a relatively high document risk level. Therefore, by configuring the document processing apparatus as described above, it is possible to specify a document in a dangerous state with high accuracy.

(Appendix 5)
The document processing apparatus according to any one of appendix 1 to appendix 4, wherein
A document processing apparatus comprising dangerous document notification means for notifying a user of the document identified as being in the dangerous state.

  According to this, it is possible to make the user recognize a document whose state is dangerous. As a result, user convenience can be improved.

(Appendix 6)
The document processing apparatus according to any one of appendix 1 to appendix 5,
A document processing apparatus comprising dangerous directory notification means for notifying a user of the directory identified as being in the dangerous state.

  According to this, it is possible to make the user recognize a directory whose state is dangerous. As a result, user convenience can be improved.

(Appendix 7)
The document processing apparatus according to any one of appendices 1 to 6,
Instruction information receiving means for receiving instruction information inputted by a user and instructing to newly arrange the document as an arrangement document in an arrangement destination directory which is one of the plurality of directories;
An arrangement process executing means for executing an arrangement process for newly arranging the arrangement document in the arrangement destination directory when the instruction information is received;
A document processing apparatus comprising:

(Appendix 8)
The document processing apparatus according to appendix 7,
When the state of the arrangement document is specified as the dangerous state and the state of the arrangement destination directory is specified as the dangerous state or the intermediate state, the first to suppress the execution of the arrangement process A document processing apparatus comprising arrangement processing suppression means.

  According to this, it is possible to prevent an increase in the number of documents in a dangerous state.

(Appendix 9)
A document processing apparatus according to appendix 7 or appendix 8,
A document processing apparatus comprising: a second arrangement process suppression unit that suppresses execution of the arrangement process when the arrangement destination directory is identified as being in a dangerous state.

  According to this, it is possible to prevent an increase in the number of documents in a dangerous state.

(Appendix 10)
The document processing apparatus according to any one of appendices 1 to 9,
The directory processing unit is a document processing apparatus configured to calculate an average value of the document risks calculated for the documents arranged in the directory as the directory risk for the directory.

(Appendix 11)
The document processing apparatus according to any one of Appendix 1 to Appendix 10,
The directory risk level calculation unit receives a keyword input by a user, and corrects the directory risk level calculated for the directory when the name of the directory includes the received keyword. Configured document processing device.

  By the way, the state of a directory has a strong correlation with the name of the directory. Therefore, by configuring the document processing apparatus as described above, the directory risk can be calculated with high accuracy.

(Appendix 12)
The document processing apparatus according to any one of Appendix 1 to Appendix 11,
The directory risk level calculation unit is configured to correct the directory risk level calculated for the directory based on the directory risk level calculated for a directory higher than the directory. apparatus.

  By the way, the state of a directory has a strong correlation with the state of a directory above the directory. Therefore, by configuring the document processing apparatus as described above, the directory risk can be calculated with high accuracy.

(Appendix 13)
The document processing apparatus according to any one of appendices 1 to 12,
The directory risk level calculation means is an authority level that indicates the directory risk level calculated for the directory and indicates the accessibility of the document arranged in the directory. Document processing apparatus configured to correct based on the above.

  By the way, the state of a directory has a strong correlation with the accessibility of the document arranged in the directory. Therefore, by configuring the document processing apparatus as described above, the directory risk can be calculated with high accuracy.

(Appendix 14)
The document processing apparatus according to any one of appendices 1 to 13,
The directory state specifying means specifies that the state of the directory is the dangerous state when the directory risk calculated for the directory is greater than a preset first threshold, A document processing apparatus configured to specify that the state of the directory is the safe state when the directory risk level is smaller than a second threshold that is set in advance and smaller than the first threshold.

(Appendix 15)
The present invention is applied to a document processing apparatus that has a file system including a plurality of directories having a hierarchical structure and includes a storage device that stores a document arranged in one of the plurality of directories.
For the document, calculate a document risk level, which is a risk level indicating the ease of leakage of information included in the document,
For the directory, calculate a directory risk level, which is a risk level indicating the risk of information leakage from documents placed in the directory,
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state The intermediate state that is a state other than the safe state is specified based on the calculated directory risk,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document processing method for specifying based on the calculated document risk.

(Appendix 16)
The document processing method according to attachment 15, wherein
When the state of the directory is specified as the dangerous state or the intermediate state, the document risk level calculated for the document arranged in the directory is calculated for the directory. A document processing method for specifying that the state of the document is the dangerous state when the degree of risk is greater than the directory risk level.

(Appendix 17)
An information processing apparatus having a file system including a plurality of directories having a hierarchical structure and including a storage device that stores a document arranged in one of the plurality of directories.
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the likelihood of leakage of information contained in the document,
Directory risk level calculating means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying, based on the calculated directory risk level, an intermediate state that is a state other than the safe state;
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
A program to realize

(Appendix 18)
The program according to appendix 17, wherein
The document status specifying means, when the status of the directory is specified as the dangerous status or the intermediate status, the document risk level calculated for the document arranged in the directory is the directory status. A program configured to specify that the state of the document is the dangerous state when the degree of risk of the directory is greater than the calculated directory risk level.

  The present invention is applicable to a document processing apparatus or the like that includes a storage device that stores a document.

DESCRIPTION OF SYMBOLS 1 Document processing apparatus 11 Document memory | storage part 12 Document risk degree calculation part 13 Keyword memory | storage part 14 Directory risk degree calculation part 15 Directory state specific | specification part 16 State storage part 17 Document state specific | specification part 18 Dangerous document notification part 19 Danger directory notification part 20 Instruction Information reception unit 21 Arrangement processing execution unit 22 Arrangement processing suppression unit 100 Document processing apparatus 101 Document risk level calculation unit 102 Directory risk level calculation unit 103 Directory status specification unit 104 Document status specification unit

Claims (10)

A document processing apparatus having a file system including a plurality of directories having a hierarchical structure, and having a storage device for storing documents arranged in one of the plurality of directories,
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the likelihood of leakage of information contained in the document,
Directory risk level calculating means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying, based on the calculated directory risk level, an intermediate state that is a state other than the safe state;
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
A document processing apparatus comprising: The document processing apparatus according to claim 1,
The document status specifying means, when the status of the directory is specified as the dangerous status or the intermediate status, the document risk level calculated for the document arranged in the directory is the directory status. A document processing apparatus configured to specify that the state of the document is the dangerous state when the degree of risk of the directory is greater than the calculated directory risk level. The document processing apparatus according to claim 1 or 2,
The document status specifying unit is configured to specify that the status of a document placed in the directory is the dangerous status when the status of the directory is specified as the dangerous status. . A document processing apparatus according to any one of claims 1 to 3,
The document state specifying unit is configured to specify that the state of the document is the dangerous state when the document risk calculated for the document is larger than a preset document risk threshold. Document processing device. A document processing apparatus according to any one of claims 1 to 4, wherein
A document processing apparatus comprising dangerous document notification means for notifying a user of the document identified as being in the dangerous state. A document processing apparatus according to any one of claims 1 to 5,
Instruction information receiving means for receiving instruction information inputted by a user and instructing to newly arrange the document as an arrangement document in an arrangement destination directory which is one of the plurality of directories;
An arrangement process executing means for executing an arrangement process for newly arranging the arrangement document in the arrangement destination directory when the instruction information is received;
A document processing apparatus comprising: The document processing apparatus according to claim 6,
When the state of the arrangement document is specified as the dangerous state and the state of the arrangement destination directory is specified as the dangerous state or the intermediate state, the first to suppress the execution of the arrangement process A document processing apparatus comprising arrangement processing suppression means. The document processing apparatus according to claim 6 or 7, wherein
A document processing apparatus comprising: a second arrangement process suppression unit that suppresses execution of the arrangement process when the arrangement destination directory is identified as being in a dangerous state. The present invention is applied to a document processing apparatus that has a file system including a plurality of directories having a hierarchical structure and includes a storage device that stores a document arranged in one of the plurality of directories.
For the document, calculate a document risk level, which is a risk level indicating the ease of leakage of information included in the document,
For the directory, calculate a directory risk level, which is a risk level indicating the risk of information leakage from documents placed in the directory,
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state The intermediate state that is a state other than the safe state is specified based on the calculated directory risk,
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document processing method for specifying based on the calculated document risk. An information processing apparatus having a file system including a plurality of directories having a hierarchical structure and including a storage device that stores a document arranged in one of the plurality of directories.
A document risk level calculating means for calculating a document risk level, which is a risk level indicating the likelihood of leakage of information contained in the document,
Directory risk level calculating means for calculating a directory risk level, which is a risk level indicating the risk of information leakage from a document placed in the directory, with respect to the directory;
The state of the directory is a dangerous state in which information is easily leaked from a document placed in the directory, a safe state in which information is difficult to leak from a document placed in the directory, and the dangerous state Directory state specifying means for specifying, based on the calculated directory risk level, an intermediate state that is a state other than the safe state;
Whether the state of the document is a dangerous state in which information is easily leaked from the document or a non-dangerous state that is a state other than the dangerous state, and the state of the specified directory, A document state specifying means for specifying based on the calculated document risk,
A program to realize

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