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. 16, 2019
Filed:
Oct. 22, 2015
Nippon Telegraph and Telephone Corporation, Chiyoda-ku, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Chiyoda-ku, JP;
Abstract
An analysis apparatus analyzes access logs including authentication results and authentication information of users, and includes: a calculation unit that calculates a similarity between pieces of authentication information in two consecutive access logs when access logs of the same access source, from the access logs, are chronologically arranged, and presumes that a piece of authentication information of the access logs of the user has been input by a human if the calculated similarity is equal to or greater than a predetermined value; and a risk determination unit that determines that there is a possibility that the access source in the access logs is being an attack source if an authentication result of any of the two access logs is authentication failure and the calculation unit presumes that any piece of authentication information of the two access logs has not been input by a human.