FBI: Millions of computers roped into criminal 'robot networks' - CNN.com

http://www.cnn.com/2007/TECH/11/29/fbi.botnet...

STORY HIGHLIGHTS
NEW: Hackers fleeced one bank institution of millions,
FBI saysBotnets are responsible for an estimated $20 million in losses and theft
FBI director calls botnets "the Swiss Army knives of cyber crime"
Clicking on Web ads, opening e-mail attachments can make computer vulnerable