In the beginning I used a completely different password for Battle.net than my other online accounts. The reason is because Blizzard REGULARLY gets hacked.
Then when the mobile authenticator came out, I started to use the same password -- which I change regularly.
This news has got me thinking again. I am definitely going to go back to using a different password with Blizzard and Battle.net.
They say some info on authenticators was stolen. Good thing I had mine disabled at the time. But I've reenabled mine now, so I think I'm good.
Still.. gotta change my password.
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For a couple of years I have been receiving e-mail from Blizzard telling me to update my account - although I do not have an account.
An investigation of your World of Warcraft account has found strong evidence that the account in question is being sold or traded ... you should immediately verify that you are the original owner of the account.
The IP address shows it came from Melbourne, Australia. Blizzard Entertainment is located in California.
I got that as well. It's a phishing scam. I already alerted the REAL Blizzard about it and sent them the emails. There was another one too -- the free 10-day trial thing.
It's an elaborate scam. It actually modifies your WoW installation so when you log in (with your credentials and all) the client -- you actually get logged into a server that ISN'T Blizzard's. I know so because I found that no one else was online -- not even my friends, who were supposed to be online (I knew this by calling them).
Because of this, I wanted to separate my WoW account from my Starcraft II/Diablo 3 account...but it can't be done, according to Blizzard. Asshats. The only solution it seems, is to deactivate the WoW account entirely -- which means throwing away your rights to play it as well, after having shelled out so much for it. Pricks.