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:
May. 18, 2021
Filed:
May. 25, 2017
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
Yang Zhong, Musashino, JP;
Masaki Tanikawa, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
A device and method to accurately detect list-based attacks without reducing the convenience for authorized users. An acquirer acquires information on accounts used for log-in trials to a plurality of websites. An analyzer calculates the degree of use of each account used in common for log-in trials to different websites in a predetermined period of time out of the accounts acquired by the acquirer and determine the log-in trials using the account to be attacks when the degree of use exceeds a predetermined threshold. A detector detects, as an attack, a log-in trial to the website using the same account as the account used for the log-in trials determined to be attacks by the analyzer.