<A HREF="http://searchsecurity.techtarget.com/originalContent/0,289142,sid14_gci1289038,00.html?track=sy160&asrc=RSS_RSS-10_160">Spammers continued to send a barrage of unwanted messages in 2007,</A> developing new ways to sneak by antispam software and clog company servers. Security researchers say that as long as spam continues to be a profitable business, the most sophisticated spam filters and other antispam technologies will continue to be thwarted by spam gangs.
Last year saw a growing number of sophisticated messages including image spam, designed to embed a message in the form of an image. Spam campaigns also grew more targeted tricking company executives into clicking links in messages that appeared to be legitimate.