When I was a kid I fell prey to a couple of phishing schemes but I don't think I've ever been hacked in the strictest sense of the word.
My brother in law lost control of his Diablo 3 account (he claims he was hacked, but I suspect he reused a password). The funny thing is that he was able to get it back and it was in a better state than he left it (more gold, tons of gems etc).