Blizzard will NEVER ask you for your username and/or password.

You should NEVER enter your username and/or password into anything other than the official World of Warcraft client and/or the OFFICIAL forums.


Via the official forums customer service STICKY:
Quote Originally Posted by Vrakthris
We'd like to advise our community of an e-mail that is being sent to some players pretending to be from our Account Administration Department and threatening immediate suspension or closure if you do not confirm your account information.

These e-mails are not from Blizzard. All account actions and inquiries will have the return address of Wowaccountadmin@blizzard.com; these phishing e-mails, in most cases have the return address of something close that may be overlooked if you are not paying close attention like: blizzzd.com.

Here is a sample of the e-mail that is usually sent.



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Q u o t e:
It has come to our attention that you are trying to sell/trade your personal World of Warcraft account. As you may or may not be aware of, this conflicts with the EULA and Terms of Agreement. If this proves to be true, your account can and will be disabled. It will be ongoing for further investigation by Blizzard employee's. This action is taken because we at Blizzard Entertainment takes these sales quite serious.

If you wish to not get your account suspended you should immediately verify your account. We need to confirm you are the original owner of the account. This is easiest done by confirming your personal information along with concealed information about your account.
You can confirm that you are the original owner of the account by replying to this email with:

* First and Last name
* Address
* Zip code
* Phone number Daytime
* Country
* Account e-mail
* CD-key, or a photograph of your CD-key that is located on your manual for World of Warcraft.
* Account name
* Account password
* Secret Question and Answer

And attach a screen shot of the key on your instruction booklet ( if possible). Reply to this with the information within 1 week, or your IP will be banned permanently, which will not let you play and/or make an account. Feel free to visit http://www.blizzard.com/support/wowbilling/ to contact us or for more information


Regards,
Account Administration Team

Blizzard Entertainment Inc
Account Administration Team
P.O. Box 18979, Irvine, CA 92623

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I can not stress this enough: No employee of Blizzard will ever ask for your password. Even if the e-mail looks legit, if it asked for your password it is not from Blizzard Entertainment.
Furthermore...
Quote Originally Posted by Malkatorix
Also, from the Wrath of the Lich King forum:

http://forums.worldofwarcraft.com/th...21016012&sid=1



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Q u o t e:
Please be aware, there is currently no Beta or beta sign-ups going on for the next World of Warcraft Expansion, Wrath of the Lich King. Should a Beta phase begin, we will post a notice on the official website.

As always, please be careful about giving out account information or passwords.
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For emphasis...
Quote Originally Posted by Vrakthris
No employee of Blizzard will ever ask for your password.