Title:
FRAUD SUFFERING PREVENTION SYSTEM, FRAUD SUFFERING PREVENTION METHOD, ENUM/DNS SERVER, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/176074
Kind Code:
A1
Abstract:
This fraud suffering prevention system (1000) comprises a call processing server (20) and an ENUM/DNS server (10). The call processing server (20) comprises: a warning level determination requesting unit that transmits call source numbers and call destination numbers to the ENUM/DNS server (10); and a fraud preventing unit that executes a predetermined fraud suffering prevention process according to a warning level. The ENUM/DNS server (10) comprises: a number information updating unit that acquires fraud number information and protection target number information from an external database (a number database 700); and a warning level determining unit that identifies the connection pattern of a connection request by use of the call source numbers and the call destination numbers and determines a warning level in accordance with the identified connection pattern.
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Inventors:
AKIMOTO MASANORI (JP)
SHIMIZU HIROSHI (JP)
SHIMIZU HIROSHI (JP)
Application Number:
PCT/JP2021/005978
Publication Date:
August 25, 2022
Filing Date:
February 17, 2021
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04M3/00; H04M3/42
Foreign References:
| US20200053205A1 | 2020-02-13 | |||
| JP2006033586A | 2006-02-02 | |||
| JP2015015530A | 2015-01-22 | |||
| JP2010004268A | 2010-01-07 | |||
| JP2016103800A | 2016-06-02 |
Attorney, Agent or Firm:
ISONO INTERNATIONAL PATENT OFFICE, P.C. (JP)
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