Inc: Beware of Botnets and Other New Kinds of Spam

Spam is increasingly coming in new and more dangerous strains, including junk email that contain images or viruses that take over your PCs and turn it into a spam-sending machine.

APRIL 1, 2007
by Todd Wasserman

Businesses appear to be falling behind in the eternal war against spammers. Just when they manage to block one variety of unsolicited junk email to their office inboxes, another variety is developed. Until new technological advances come along, the best they can hope to do is use existing technology to stem the flow or outsource the work to companies that fight spam full time.

In the last year, the amount of spam rose 250 percent over 2005 levels, according to security software firm SonicWall, in Sunnyvale, Calif.

There are two main reasons for this surge: Image spam and botnets.

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