JP2011135328A - Scam telephone call detection and report system, and detecting and reporting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To call attention to a responder and to notify the third person of a scam telephone call by detecting that an incoming call is a scam telephone call. <P>SOLUTION: This scam telephone call detection and report system includes a PBX 101 to which a telephone set 107 for responding to an incoming call from a telephone set 106 is connected through a public telephone network 105, and a communication system 103 connected to the PBX 101 to provide a third person speech communication state including its own communication system when the telephone set 107 used by the responder responds to the incoming call from the telephone set 106 used by a caller through the public telephone network 105. The communication system 103 recognizes and analyzes voice during the speech communication, detects whether risky keywords registered beforehand are included in conversation of the speech communication, authenticates the caller by the voiceprint of the caller and a password inputted by the caller when the risky keywords registered beforehand are included in the conversation of the speech communication, and makes the responder listen to a voice that calls attention to the fact that the present speech communication has the risk possibly being a scam when it can not authenticate the caller. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a fraudulent telephone detection / notification system and detection / notification method, and in particular, when answering an incoming call, it detects that the incoming call is a fraudulent telephone call such as an ole fraud or a transfer fraud. The present invention relates to a fraudulent telephone detection / notification system and detection / notification method that can alert a person and notify a third party.

  As a conventional technology for detecting fraudulent calls such as wire fraud and alerting respondents, the past crime history is searched from the caller number and it is a dangerous caller number. There are a method for warning that there is danger, a method for detecting a dangerous keyword from a conversation, and a method for warning as a dangerous person. Since these prior art methods only give warnings, it is possible to refuse a call or make a report, but the caller is not a dangerous person but a partner who can continue the conversation. However, there were cases where the call was refused or reported.

  Further, as another conventional technique that can determine whether or not a caller is a dangerous person, for example, a technique described in Patent Document 1 is known. In this conventional technique, it is determined whether or not a caller is a dangerous person by checking a caller number or a keyword included in the content of a call, and a warning or notification is given by voice or electronic mail.

JP 2007-323107 A

  However, although the method according to the prior art described in Patent Document 1 described above can make the responder recognize that the caller during a call is dangerous, the determination by keyword check Even if the caller is not a dangerous person and wants to continue the conversation, the call is determined to be a dangerous call depending on the number of detected keywords during the conversation, and the warning sound is played. It has a problem that it makes a report by, etc., and disturbs or misreports the call.

  The object of the present invention is to solve the problems of the prior art as described above, and to detect that the incoming call is a fraudulent call such as an ole fraud or a transfer fraud when answering an incoming call. If the caller ID is not notified or a conversation that includes a dangerous keyword is detected, it is detected that the call is not a fraudulent call. It is to provide a fraudulent telephone detection / notification system and a detection / notification method that can continue the process.

  According to the present invention, the object of the present invention is to provide a fraudulent telephone detection / notification system for detecting a fraudulent telephone call from the content of a call and alerting the responder when responding to an incoming telephone call. A PBX connected to a telephone used by a responder responding to an incoming call from a telephone used by a caller via the public telephone network, and a telephone connected to the PBX and used by the responder. A communication system for setting a three-way communication state including a communication system when the caller responds to an incoming call from a telephone used by a caller via the public telephone network, and the communication system recognizes a voice during a call. Analyzing and detecting specific word / keyword detection / determination means for detecting whether or not a pre-registered dangerous keyword is included in the conversation in progress, and pre-registered in the conversation in progress Note that the authentication method for authenticating the caller when the keyword is included, and that if the authentication is not successful, the current call to the responder may be a risk of fraud. This is achieved by having a sound reproducing means for listening to a sound for calling out.

  According to the present invention, it is possible to prevent fraud by alerting the responder to a call with a risk of fraud, and in the case where the responder is the other party who wants to talk, the person is authenticated, The call can be made without interruption.

It is a block diagram which shows the structure of the fraudulent telephone detection and notification system by one Embodiment of this invention. It is a block diagram which shows the function structure of a communication system. It is a figure which shows the structure of the various data tables registered into the database. It is a sequence chart explaining the process which authenticates a caller when there is an incoming call from the telephone set used by the caller to the telephone set used by the responder. It is a sequence chart explaining the process in case a communication system fails in a caller's authentication and transmits to a notification destination. FIG. 10 is a flowchart (part 1) illustrating an example of a processing operation in which the communication system confirms the content of a call from the caller's voice and confirms whether the caller is not a dangerous person by inputting a personal identification number. FIG. 10 is a flowchart (part 2) illustrating an example of a processing operation in which the communication system confirms the content of a call from the caller's voice and confirms whether the caller is not a dangerous person by inputting a personal identification number.

  Embodiments of a fraudulent telephone detection / notification system and detection / notification method according to the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a fraudulent telephone detection / notification system according to an embodiment of the present invention.

  The fraudulent telephone detection / notification system according to an embodiment of the present invention is configured by connecting a communication system 103 and an e-mail server 102 to a LAN 104 and connecting a PBX 101 to the communication system 103. The PBX 101 is connected to the public network 105. The public network 105 accommodates a large number of telephones (not shown) including a telephone 106 used by a caller who makes a fraudulent call and a telephone 110 as a notification destination. ing. The PBX 102 is connected to a telephone 107 used by a responder who is trying to detect fraudulent telephones targeted in the embodiment of the present invention. The communication system 103 has a database 109 for registering data such as keywords. It is connected.

  In the above description, the PBX 101, the communication system 103, and the database 109 may be configured as a single telephone system for use in a home telephone system or business office, and the PBX 108 is provided in another room. One or a plurality of telephones 108 that are used by a family member and serve as a notification destination in the embodiment of the present invention are connected. Further, a FAX device may be connected to the PBX 108.

  In the embodiment of the present invention configured as described above, the communication system 103 is a communication procedure for sending and receiving electronic mail via the LAN 104 (generally, SMTP (Simple Mail Transfer Protocol which is a known protocol). ) And POP3 (Post Office Protocol Version 3) procedure) and can communicate with the e-mail server 102. In addition, the communication system 103 includes a communication means (generally known ODBC (Open Database Connectivity)) with the data registration database 109 for keywords and the like, and can communicate with the database 109. .

  FIG. 2 is a block diagram showing a functional configuration of the communication system 103.

  The communication system 103 includes an e-mail transmission unit 1011 that transmits an e-mail to the e-mail server 102, a voice print detection determination unit 1012 for specifying the voice of the other party, a PB signal detection determination unit 1013 for receiving a personal identification number, an authentication Voice line / password identification means 1014 for search, specific word / keyword detection / determination means 1015, specific word / keyword registration means 1016, guidance voices such as warning guidance for the identified words / keywords / voice prints, etc. Voice reproducing means 1017 to be reproduced by the user, voice recording means 1018 for recording the contents of the call, voice text converting means 1019 for converting the text into a text sentence while recognizing the contents of the call, database communication for updating and referring to the database Means 1020, main controller 1 for controlling each means as a whole 22, main storage unit 1023 for processing stored information, operating system 1024, clock unit 1025 for controlling date and time, LAN control means 1026 for controlling the interface part of LAN, and line control for controlling connection with PBX 101 Means 1027 are provided.

  Each unit described above is configured by a program, stored in a non-illustrated nonvolatile storage device, and each function is constructed by being executed by the main control unit 1022 under the operating system 1024. It is.

  FIG. 3 is a diagram showing the configuration of various data tables registered in the database 109, which will be described next.

  FIG. 3A shows an example of the configuration of a personal identification number table. The illustrated personal identification number table includes a plurality of combinations of the name 109-11 of the target person and the personal identification number 109-12 that can be used for continuous communication. Records are registered and configured. The password registered here is determined in advance between the responder and the caller who recognizes that the responder is not dangerous, and uses the voiceprint / password registration means 1014 of the communication system 103. Registered.

  FIG. 3B shows a configuration example of a voice print data table. The voice print data table shown in FIG. 3 shows the name 109-21, voice print number 109-22, and voice print data 109-23 of the target person who can continuously make a call. A plurality of records are registered and configured. In the embodiment of the present invention, a known voiceprint recognition technique is used as a voiceprint recognition method. In addition, the voiceprint data registered here is obtained only when a call is made in advance between the responder and the caller that the responder recognizes as a non-dangerous person. Alternatively, the information is registered using the voiceprint / password registration means 1014 included in the communication system 103 without obtaining consent.

  FIG. 3C shows an example of the configuration of the keyword table, and the illustrated keyword table is configured by registering a plurality of keywords for determining danger. The keyword registered here is a keyword that will be included in the conversation, and a specific word / keyword possessed by the communication system 103 by the respondent who is a user, a family living together, or a system builder This is registered in advance using the registration system 1015.

  FIG. 3D shows a configuration example of a notification destination table. The illustrated notification destination table detects a dangerous keyword, cannot authenticate the caller with a voiceprint or a personal identification number, and determines the notification destination in the case where it is determined as dangerous. Information is registered, and a plurality of records by a set of a notification destination telephone number 109-41 and an e-mail address 109-42 are registered. The information of the notification destination registered here is registered in advance by the responder who is the user, the family living together, or the like.

  FIG. 4 is a sequence chart for explaining the process of authenticating the caller when there is an incoming call from the telephone set 106 used by the caller to the telephone set 107 used by the responder. Next, this will be described.

(1) When there is an incoming call from the telephone set 106 used by the caller to the telephone set 107 used by the responder via the public network 105 and the PBX 101, and the responder responds to this, the PBX 101 At the same time or by the responder's operation, the communication system 103 is made to make a call for a three-party call (steps 400 to 402).

(2) The communication system 103 automatically responds to an incoming call from the PBX 101 and puts the line into a three-party call state (steps 403 and 403 ').

(3) Thereafter, the communication system 103 monitors the content of the call while in a three-party call state, recognizes and analyzes the voice during the call, starts recording at the same time, and also stores in the database 109 during the conversation during the call. It is detected whether or not a dangerous keyword registered in the keyword table is included (steps 404 and 405).

(4) When the communication system 103 detects a dangerous keyword registered in the keyword table during the voice recognition analysis, the communication system 103 reproduces a voice guidance such as “Please enter the password” and outputs the reproduced voice signal. Transmit to the line in the three-party call state (step 406).

(5) The caller who has listened to the guidance from the communication system 103 in the three-party call state operates the PB button of the telephone set 106 used by the caller to input the predetermined code number (step 407).

(6) The communication system 103 reproduces a voice such as “authenticated” and transmits it to the line when the password entered by the caller matches, and this is sent to the caller 106 and the responder 107. To hear that the conversation may be continued (step 408).

(7) The communication system 103 also reproduces a voice guidance such as “cannot be authenticated” and transmits it to a line in a three-party call state if the password entered by the caller does not match. The caller is prompted to re-enter the password, and the responder 107 is alerted that the current call is a risk of fraud or the like (step 409).

  The above-described processing for authenticating the caller is based on having the caller input a password. However, the present invention provides voice guidance such as “Please enter the password” in step 406 described above. Instead of playing and transmitting the voice print, the voice print detection function 1012 which is a voice print authentication function is activated, the voice of the caller 106 is analyzed to detect the voice print, and the voice print registered in the voice print data table in the database 109 is detected. If it matches, the process proceeds to the process of step 408 and “authenticated” is reproduced, and if it is an unregistered voiceprint, the process proceeds to the process of step 409 and voice guidance such as “cannot authenticate” is displayed. It can also be played back.

  In addition, each guidance including the guidance for alerting from the communication system 103 in the above-described process of authenticating the caller can be listened to by both parties during the call by setting in the PBX 101, or on one side A choice can be made so that only the caller can listen.

  In addition, in the above-described process for authenticating the caller, if the authentication fails, the present invention uses the recorded call voice file or text-converted file as an e-mail as a police registered in advance in the notification destination table of the database 109. Or the like can be transmitted to the e-mail address 109-42 of the notification destination or the like, or the telephone number 109-41 of the notification destination table can be notified from the communication system 103 by telephone. In the case of notification by telephone, if the notification destination responds, it is possible to connect to the three-party call as it is and to let the notification destination partner participate in the conversation.

  FIG. 5 is a sequence chart for explaining the processing when the communication system 103 fails to authenticate the caller and sends the call to the notification destination.

(1) After performing the same processing as the sequence described with reference to FIG. 4 and reproducing “cannot authenticate”, the communication system 103 makes a call to the notification destination telephone 108 via the PBX 101 or A call is sent from the other line of the system 103 to the telephone 110 to be notified through the public network 105. Here, it is assumed that a call is made to the notification destination telephone 110 via the public network 105 (steps 500 to 503).

(2) When the notification destination telephone 110 responds, the communication system 103 sets the line in the three-party call state that is monitoring the three-party call and the line that has been sent to the notification destination telephone 110 inside the communication system 103. Then, the notification destination telephone 110 is connected to the line in the three-party call state, and a new three-party call state (actually a call between the four parties is possible) is established (steps 504 and 505).

  By performing the sequence processing as described above, it is possible for the other party of the notification destination to interrupt the previous call from the telephone 110 and give advice or alert.

  FIGS. 6 and 7 are flowcharts for explaining an example of a processing operation in which the communication system 103 confirms the content of a call from the caller's voice and inputs a personal identification number to confirm whether the caller is not a dangerous person. Next, this will be described. 6 and 7 is a series of processes, and will be described below without distinguishing the figure numbers.

(1) When a three-way call is started in response to an incoming call from the PBX 101, the communication system 103 refers to a keyword detection start setting preset in the communication system 103 (not shown), If the setting is ON, call monitoring is started and keyword search is performed (steps 600 and 601).

(2) The communication system 103 checks whether or not there is a dangerous keyword registered in the keyword table in the contents of the call being monitored, and if there is no dangerous keyword, the call monitoring is continued (step 602).

(3) When a keyword matching the dangerous keyword registered in the keyword table is detected in the check in step 602, the voiceprint of the caller is detected, and the detected voiceprint and the voiceprint registered in the voiceprint data table are detected. A check is made to see if they match, and if they match, “voice print has been authenticated” is played, the keyword search is canceled as a safe call, and the call is continued (steps 603 to 605).

(4) If the voiceprints do not match in the check in step 603, it is determined whether or not a password input setting preset in the communication system 103 is ON, although not shown. If the number input setting is OFF, “Dangerous call. Please check the other party” is reproduced and transmitted to the line to notify the responder that it is a dangerous call (steps 606 and 607). .

(5) If it is determined in step 606 that the password input setting is ON, a message such as “The voiceprint cannot be authenticated. Please enter the password” is played and the PB signal is sent from the telephone 106 used by the caller. It waits for the input of the personal identification number and transmission (step 608).

(6) When a personal identification number based on the PB signal is transmitted from the telephone set 106 used by the caller and received, the communication system 103 uses the personal identification number registered in the personal identification number table in the personal identification number based on the transmitted PB signal. If it matches, the password is authenticated and sent to the line, and the PIN check is canceled as a secure call and the call is continued (step) 609-611).

(7) If it is determined in step 609 that the PIN number by the PB signal cannot be detected, or if it does not match the registered PIN, it is checked whether or not a retry over has occurred by checking the number of erroneous inputs. If it is not a retry over, it plays “PIN code is wrong. Please enter again”, and the PB signal is entered again from the telephone 106 used by the caller and transmitted. It waits for it to come and returns to the processing from step 609 to continue the processing (steps 612 and 613).

(8) If it is determined in step 612 that the retry is over, "Dangerous call. Please check the other party" is played and sent to the line to notify the responder that it is a dangerous call ( Step 614).

(9) After that, the communication system 103 determines whether or not an e-mail notification setting preset in the communication system 103 is ON, although not shown, and the e-mail notification setting is turned OFF. If the call is continued, and the e-mail notification setting is ON, the text of the call contents obtained by recognizing and analyzing the voice during the call to the e-mail address registered in the notification destination table in the database. The sentence is transmitted by e-mail via the mail server 102 (steps 615 to 617).

  In the processing described with reference to FIGS. 6 and 7, the setting information used in the determinations of steps 600, 606, and 615 may be set by the system installer when the system is installed according to the embodiment of the present invention. You can also change its settings after you start using it.

  In the above-described embodiment of the present invention, the responder using the telephone 107 is informed during the call that the caller is a dangerous person by the processing in the embodiment of the present invention as described above. When you are on the hook, you can disconnect the line.

  According to the above-described embodiment of the present invention, it is proved by calling the responder to prevent the transfer fraud by calling the responder with a risk of the transfer fraud, or by recording and leaving the call contents. In the case of a partner who wants to secure a product or wants to talk, it is possible to continue the call by performing identity authentication, and it is possible to make a call without hindering the conversation or misreporting.

  Further, according to the above-described embodiment of the present invention, it is possible to perform identity authentication and secure evidence by switching various methods such as authentication function, call recording, and warning message playback, and also repel the other party. It is possible to counter fraud by doing so.

101 PBX
102 e-mail server 103 communication system 104 LAN
DESCRIPTION OF SYMBOLS 105 Public network 106 Telephone used by the sender 107 Telephone used by the responder 108, 110 Notification destination telephone 109 Database 1011 E-mail transmission means 1012 Voice print detection determination means 1013 PB signal detection determination means 1014 Voice print / password registration means 1015 Specific word / keyword detection determination means 1016 Specific word / keyword registration means 1017 Voice reproduction means 1018 Voice recording means 1019 Voice text conversion means 1020 Database communication means 1021 Main control section 1023 Main storage section 1024 Operating system 1025 Clock section 1026 LAN control means 1027 Line control means

Claims (6)

In the fraudulent telephone detection / notification system that alerts the responder by detecting that it is a fraudulent call from the content of the call when answering the incoming call,
A PBX connected to a public telephone network and connected to a telephone used by a responder who responds to an incoming call from a telephone used by a caller via the public telephone network, and connected to the PBX and used by the responder A communication system that makes a three-party call state including its own communication system when the telephone responding to an incoming call from a telephone used by a caller via the public telephone network,
The communication system recognizes and analyzes voice during a call and detects whether or not a pre-registered dangerous keyword is included in the conversation during the call, If a dangerous keyword registered in advance is included in the conversation, the authentication means for authenticating the caller, and if the authentication fails, the current call may be fraudulent to the responder A fraudulent telephone detection / notification system, characterized in that it is configured to have a sound reproduction means for listening to a sound that calls attention to being dangerous.   The authenticating means is an authenticating means for detecting whether the voiceprint detection / analysis means analyzes the voice of the caller to detect a voiceprint, and the detected voiceprint matches a pre-registered voiceprint; or 2. The fraudulent telephone detection / notification system according to claim 1, wherein the fraudulent telephone detection / notification system is an authentication means based on whether or not the input password matches a previously registered password.   When the caller cannot be authenticated, the communication system makes a call to the notification destination telephone connected to the PBX or the public telephone network, and after the response of the notification destination telephone, 2. The fraudulent telephone detection / notification system according to claim 1, further comprising means for causing a responder to participate in the call.   If the caller cannot be authenticated, the communication system recognizes and analyzes the voice of the call to the pre-registered e-mail address registered in advance via a mail server by e-mail. The fraudulent telephone detection / notification system according to claim 1, further comprising means for transmitting the information. In the fraudulent call detection / reporting method that detects the fraudulent call from the content of the call and alerts the respondent when answering the incoming call,
A PBX connected to a public telephone network and connected to a telephone used by a responder who responds to an incoming call from a telephone used by a caller via the public telephone network, and connected to the PBX and used by the responder A communication system that makes a three-party call state including its own communication system when the telephone responding to an incoming call from a telephone used by a caller via the public telephone network,
The communication system recognizes and analyzes the voice during a call, detects whether a pre-registered dangerous keyword is included in the conversation during the call, and is registered in the conversation during the call. If the caller is authenticated and the caller fails to authenticate, the responder is warned that the current call is a risk of fraud. A fraudulent telephone detection / reporting method characterized by listening to an arousing voice.   In the authentication, the voiceprint detection judging means analyzes the voice of the caller to detect the voiceprint, and whether or not the detected voiceprint matches a pre-registered voiceprint, or allows the caller to input a password. 6. The fraudulent telephone detection / notification method according to claim 5, wherein the fraudulent telephone detection / notification method is performed based on whether or not the entered personal identification number matches a personal identification number registered in advance.

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