Identifying unwanted electronic messages

Details Identifying unwanted electronic messages Identifying unwanted electronic messages

2008-01-29

2008-01-29

Zand, Kambiz (Department: 2134)

Information security

Access control or authentication

Network

C713S188000, C709S206000, C709S207000

Reexamination Certificate

active

07325249

ABSTRACT:
An unwanted message may be identified by inspecting the payload portion of a message being communicated, comparing the characteristics of the payload portion with stored data indicating characteristics of other messages, and identifying a security condition based on a comparison of the message inspected. The characteristics inspected may include the payload portion of a message or the whole message when the characteristics are being compared against messages being exchanged on more than one local exchanging system. Furthermore, the characteristics of messages may be tracked for comparison against the characteristics of future messages. A threshold number of those characteristics may subsequently implicate a hostile security condition, even if a current comparison of these characteristics does not reach the threshold necessary to implicate a hostile security condition.

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