Special fraud countermeasure apparatus, special fraud countermeasure method, and special fraud countermeasure program
地域：
Tokyo
摘要
An anti-communications fraud apparatus includes: an analysis unit that analyzes a voiceprint of a communication voice of a calling party; a determination unit that acquires, from a database in which the voiceprint and a degree of fraud risk are stored in association with each other, the degree of fraud risk corresponding to the voiceprint of the calling party, and determines whether the degree of fraud risk exceeds a predetermined threshold; and a notification unit that notifies that the calling party is dangerous when the degree of fraud risk exceeds the threshold.
說明書
This application is a National Stage application under 35 U.S.C. § 371 of International Application No. PCT/JP2020/008917, having an International Filing Date of Mar. 3, 2020.
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- The disclosure of the prior application is considered part of the disclosure of this application, and is incorporated by reference in its entirety into this application.
The present invention relates to an anti-communications fraud apparatus, an anti-communications fraud method, and an anti-communications fraud program.
In recent years, the number of occurrences of communications fraud has been significantly increasing, and thus countermeasures for nuisance calls and suspicious calls on network have been demanded. As a countermeasure for communications fraud, there is a service in which a phone number of a malicious calling party is registered in a blacklist and a dedicated terminal capable of referring to the blacklist is provided in a subscriber's home, so that the subscriber is warned about an incoming call from a calling party who may be involved in communications fraud (NPL 1).
NPL 1: TOBILA SYSTEMS, “TOBILAPHONE”, [online], Internet<URL: https://tobilaphone.com/landline/>
權(quán)利要求
The invention claimed is:1. An anti-communications fraud apparatus, comprising:an analysis unit, including one or more processors, configured to analyze a voiceprint of a communication voice of a calling party; a determination unit, including one or more processors, configured to acquire, from a database in which the voiceprint and a degree of fraud risk are stored in association with each other, the degree of fraud risk corresponding to the voiceprint of the calling party, and determine whether the degree of fraud risk exceeds a threshold; a notification unit, including one or more processors, configured to notify that the calling party is dangerous when the degree of fraud risk exceeds the threshold; and an update unit, including one or more processors, configured toreceive, from a called party, feedback information regarding the voiceprint of the calling party, wherein the feedback information indicates that the calling party is suspicious, determine that a predetermined number of pieces of feedback information is received for the voiceprint of the calling party in a predetermined period of time, and raise the degree of fraud risk of the voiceprint of the calling party. 2. The anti-communications fraud apparatus according to claim 1 , whereinafter a call between the calling party and the called party ends, the notification unit is configured to notify at least one of a called terminal of the called party or a contact destination using terminal of the called party that the calling party is dangerous. 3. The anti-communications fraud apparatus according to claim 1 , whereinthe notification unit is configured to transmit a warning sound to a called terminal of the called party during a call between the calling party and the called party. 4. The anti-communications fraud apparatus according to claim 1 , whereinthe updating unit is configured to receive the feedback information from a called terminal of the called party or a contact destination using terminal of the called party, and update the degree of fraud risk of the voiceprint of the calling party of a call, the voiceprint being specified in the feedback information. 5. The anti-communications fraud apparatus according to claim 4 , whereinthe updating unit is configured to update a score of the voiceprint of the calling party based on credibility of the called party who has transmitted the feedback information or a user of the contact destination using terminal. 6. The anti-communications fraud apparatus according to claim 1 , whereinthe analysis unit is configured to analyze a voiceprint of a communication voice of the called party, the determination unit is configured to acquire a degree of fraud risk corresponding to the voiceprint of the called party from the database and determine whether the degree of fraud risk exceeds the threshold, and when the degree of fraud risk exceeds the threshold, the notification unit is configured to notify at least one of a calling terminal of the calling party or a contact destination using terminal of the calling party that the called party is dangerous. 7. An anti-communications fraud method executed by an anti-communications fraud apparatus, the method comprising:analyzing a voiceprint of a communication voice of a calling party; acquiring, from a database in which the voiceprint and a degree of fraud risk are stored in association with each other, the degree of fraud risk corresponding to the voiceprint of the calling party, and determining whether the degree of fraud risk exceeds a threshold; notifying, when the degree of fraud risk exceeds the threshold, that the calling party is dangerous; receiving, from a called party, feedback information regarding the voiceprint of the calling party, wherein the feedback information indicates that the calling party is suspicious; determining that a predetermined number of pieces of feedback information is received for the voiceprint of the calling party in a predetermined period of time; and raising the degree of fraud risk of the voiceprint of the calling party. 8. A non-transitory computer readable medium storing one or more instructions causing a computer to operate as an anti-communications fraud apparatus to execute:analyzing a voiceprint of a communication voice of a calling party; acquiring, from a database in which the voiceprint and a degree of fraud risk are stored in association with each other, the degree of fraud risk corresponding to the voiceprint of the calling party, and determining whether the degree of fraud risk exceeds a threshold; notifying, when the degree of fraud risk exceeds the threshold, that the calling party is dangerous; receiving, from a called party, feedback information regarding the voiceprint of the calling party, wherein the feedback information indicates that the calling party is suspicious; determining that a predetermined number of pieces of feedback information is received for the voiceprint of the calling party in a predetermined period of time; and raising the degree of fraud risk of the voiceprint of the calling party. 9. The anti-communications fraud method according to claim 7 , comprising:after a call between the calling party and the called party ends, notifying at least one of a called terminal of the called party or a contact destination using terminal of the called party that the calling party is dangerous. 10. The anti-communications fraud method according to claim 7 , comprising:transmitting a warning sound to a called terminal of the called party during a call between the calling party and the called party. 11. The anti-communications fraud method according to claim 7 , further comprising:receiving the feedback information from a called terminal of the called party or a contact destination using terminal of the called party, and updating the degree of fraud risk of the voiceprint of the calling party of a call, the voiceprint being specified in the feedback information. 12. The anti-communications fraud method according to claim 11 , comprising:updating a score of the voiceprint of the calling party based on credibility of the called party who has transmitted the feedback information or a user of the contact destination using terminal. 13. The anti-communications fraud method according to claim 7 , comprising:analyzing a voiceprint of a communication voice of the called party; acquiring a degree of fraud risk corresponding to the voiceprint of the called party from the database and determine whether the degree of fraud risk exceeds the threshold; and when the degree of fraud risk exceeds the threshold, notifying at least one of a calling terminal of the calling party or a contact destination using terminal of the calling party that the called party is dangerous. 14. The non-transitory computer readable medium according to claim 8 , wherein the one or more instructions cause the computer to execute:after a call between the calling party and the called party ends, notifying at least one of a called terminal of the called party or a contact destination using terminal of the called party that the calling party is dangerous. 15. The non-transitory computer readable medium according to claim 8 , wherein the one or more instructions cause the computer to execute:transmitting a warning sound to a called terminal of the called party during a call between the calling party and the called party. 16. The non-transitory computer readable medium according to claim 8 , wherein the one or more instructions cause the computer to execute:receiving the feedback information from a called terminal of the called party or a contact destination using terminal of the called party, and updating the degree of fraud risk of the voiceprint of the calling party of a call, the voiceprint being specified in the feedback information. 17. The non-transitory computer readable medium according to claim 16 , wherein the one or more instructions cause the computer to execute:updating a score of the voiceprint of the calling party based on credibility of the called party who has transmitted the feedback information or a user of the contact destination using terminal. 18. The non-transitory computer readable medium according to claim 8 , wherein the one or more instructions cause the computer to execute:analyzing a voiceprint of a communication voice of the called party; acquiring a degree of fraud risk corresponding to the voiceprint of the called party from the database and determine whether the degree of fraud risk exceeds the threshold; and when the degree of fraud risk exceeds the threshold, notifying at least one of a calling terminal of the calling party or a contact destination using terminal of the calling party that the called party is dangerous.
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