Originally Posted by Frosstbyte

Changing your PW doesn't do you much good if they have a keylogger on your system. Update all your scanning software and run it regularly. Unless you're ABSOLUTELY sure where a link on the blizzard boards is sending you, don't click it. And, you know, even if you are absolutely sure, maybe you shouldn't click it anyway. I got a keylogger from the boards (though fortunately I caught it before I'd logged in) and I haven't clicked much since.

I'd recommend getting Spybot, because of it's delightful immunization feature. Instead of just notifying you when you catch something and removing it, spybot actually blocks all known threats from functioning even if it gets on your system. Far from perfect, but it's definitely one of the best features I've seen on a spyware scanner.

If it makes you feel better, go ahead and change your pw, too.