Young Hwa Cho

US Patent:

20080189784, Aug 7, 2008

Filed:

Sep 7, 2005

Appl. No.:

11/574878

Inventors:

William Mangione-Smith - Kirkland WA, US
Young H. Cho - Chatsworth CA, US

Assignee:

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA - Oakland CA

International Classification:

G06F 11/00

US Classification:

726 23

Abstract:

A system and method is provided for detecting malicious data such as, for example, viruses in a computer network. More specifically, system and method utilizes filters to detect pre-identified patterns or threat signatures in a data stream. In one embodiment, a deep packet inspection system for detecting a plurality of malicious programs in a data packet received from a network, wherein each malicious program has a unique pattern comprising a plurality of segments, includes a plurality of pattern detection modules configured to receive one or more data packets in parallel, wherein each of the plurality of pattern detection modules has an output, and one or more long pattern state machines coupled to the outputs of the plurality of pattern detection modules. The deep packet inspection system is configured to detect a pattern of any length at any location within a data packet.