Malware parading as antivirus software is turning up everywhere on the Web. Security vendor Symantec in mid-October counted 250 variations of this malicious code that pretends to scan users' PCs for viruses, but instead installs Trojans or other malware.

But few would suspect a CD that came with a webcam purchased at a well-known retail outlet would include a link to a site that downloads such malicious software.  According to an article by IDG News Service, a Web designer in Washington ran into that scenario after purchasing a Markvision webcam from Office Depot last week at the "door crasher" sale price of $10.