The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2021
Filed:
Jun. 03, 2016
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A detection apparatus extracts an account and a source address of the account from authentication information obtained from an authentication apparatus configured to perform user authentication, groups accounts for each of time slots at predetermined time intervals and each of source addresses in accordance with a timestamp and the source address of the account, and extracts an account group from which duplication of an identical account in an identical group has been excluded. Subsequently, the detection apparatus calculates the number of duplicate accounts among the extracted account groups. The detection apparatus determines that an identical source address is an address of an attacker in a case where the number of account groups of the identical source address in which the number of calculated accounts exceeds a first threshold exceeds a second threshold.