Executive Summary (This is a document excerpt)

2006 saw the birth of image spam, which stumped many antispam programs. As image spam subsides, many companies are wary of what's coming next. With spam accounting for more than 90% of all email on the Internet today, any hiccup in the antispam filter will disrupt a healthy messaging environment. Image spam marks the beginning of spammers using artificial intelligence (AI) problems to exploit the limitations of content analysis used by spam filters, and spammers will continue to incorporate similar techniques. Therefore, automatic content comprehension technologies will lose their effectiveness in fighting spam. Organizations should turn to tools that target the fundamental behavior characteristics of spam, which are unlikely to change even in future spam incarnations.

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