PC users open doors to such worms as Conficker, Taterf - USATODAY.com

A year after it first slithered onto the Internet, the Conficker worm remains as virulent as ever, despite an unprecedented eradication campaign. Meanwhile, a similar, though less heralded worm, Taterf, is gathering steam.

Conficker and Taterf may be unstoppable, barring sweeping behavior changes by companies and consumers – which is unlikely. "The sad fact is worms and viruses would be wiped out if everyone used best security practices," says Eric Sites, chief technology officer of anti-virus firm Sunbelt Software...