MySpace devotee Kary Rogers was expecting to see a gut-busting video when a friend from the popular online hangout messaged him a link.

First, though, he was directed to a page where he was supposed to re-enter his password. Rogers realized that someone was trying to steal his information, and he didn’t take the bait. At best, he would be spammed with junk e-mails; worse, the Web thief might steal his real-life identity.