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:
Aug. 22, 2017
Filed:
Jul. 14, 2015
Applicant:
Trend Micro Incorporated, Tokyo, JP;
Inventors:
Cheng-Han Wu, Taipei, TW;
Shih-Wei Lu, Taipei, TW;
Assignee:
Trend Micro Incorporated, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01); G06F 21/55 (2013.01); G06F 21/56 (2013.01);
U.S. Cl.
CPC ...
G06F 21/552 (2013.01); G06F 21/563 (2013.01); G06F 21/566 (2013.01);
Abstract
Forged emails are detected by extracting email address parts of a sender email address. The email address parts include an account name, a subdomain, and a base domain of the sender email address. The mutation ratio of the email address parts relative to reference strings are calculated to determine similarity of the email address parts to the reference strings. The mutation ratios are compared to ratio thresholds to identify suspicious email addresses, and the results of identifying suspicious email addresses are correlated with other computer security information to identify forged emails.