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:
Feb. 02, 2010
Filed:
Aug. 16, 2002
Salvatore J. Stolfo, Ridgewood, NJ (US);
Eleazar Eskin, Santa Monica, CA (US);
Shlomo Herskop, Brooklyn, NY (US);
Manasi Bhattacharyya, Flushing, NY (US);
Salvatore J. Stolfo, Ridgewood, NJ (US);
Eleazar Eskin, Santa Monica, CA (US);
Shlomo Herskop, Brooklyn, NY (US);
Manasi Bhattacharyya, Flushing, NY (US);
The Trustees of Columbia University in the City of New York, New York, NY (US);
Abstract
A system and methods of detecting an occurrence of a violation of an email security policy of a computer system. A model relating to the transmission of prior emails through the computer system is defined which is derived from statistics relating to the prior emails. For selected emails to be analyzed, statistics concerning the selected email are gathered. Such statistics may refer to the behavior or other features of the selected emails, attachments to emails, or email accounts. The determination of whether a violation of an email security policy has occurred is performed by applying the model of prior email transmission to the statistics relating to the selected email. The model may be statistical or probabilistic. A model of prior email transmission may include grouping email recipients into cliques. A determination of a violation of a security policy may occur if email recipients for a particular email are in more than one clique.