Symantec reports that e-mail virus has hit 2,500 people, but experts differ on PrettyPark's impact. (ZDNet)

Victims of e-mail virus increase 2,000 percent over the weekend, Symantec reports. (ZDNet)

Anti-virus companies unearth worm/Trojan that reportedly e-mails PCs Windows Address Book every 30 seconds. (ZDNet)