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.

Date of Patent:
May. 26, 2020

Filed:

Aug. 18, 2014
Applicant:

Trend Micro Incorporated, Tokyo, JP;

Inventors:

Ching-Cheng Hsu, Taipei, TW;

Hsun-Jen Hsu, Taipei, TW;

I-Ting Lien, Taipei, TW;

Cheng-Han Lin, Taipei, TW;

Ching-Ming Lin, Taipei, TW;

Yin-Liang Wang, Taipei, TW;

Cheng-Han Wu, Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 29/06 (2006.01); H04L 12/58 (2006.01); H04L 12/28 (2006.01);
U.S. Cl.
CPC ...
H04L 63/1441 (2013.01);
Abstract

Targeted email attacks are detected using feature combinations of known abnormal emails, interflow shapes formed by an email with other emails, or both. An email received in an endpoint computer system is scanned to identify abnormal features indicative of a targeted email attack and the abnormal features of the email are checked against abnormal feature combinations. The email can also be scanned to identify an interflow shape formed by the email with other emails and the interflow shape is checked against interflow shapes of known targeted email attacks.


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