#0 - Sept. 10, 2009, 8:32 a.m.
Blizzard Post
There are unfortunately regular attempts at stealing World of Warcraft players' game accounts. For your account's safety, please read the following article on our Support Site, and keep the below tips in mind.
http://eu.battle.net/security/
  • Never give your password to anyone.
  • Always verify that you are accessing an official Blizzard website whenever submitting account information. (wow-europe.com, worldofwarcraft.com, wowarmory.com, blizzard.com, battle.net, diablo3.com, starcraft2.com)
  • Official Blizzard emails will always end in @blizzard.com or @battle.net. (Verify the address on your reply before clicking 'send'.)
  • Free programs are available that will allow you to schedule regular scans of your machine for malicious software and key-logging programs.
  • For additional features and functionality, merge your World of Warcraft account into a Blizzard Battle.net account. (This also prevents an account thief from merging your account into his battle.net account.)
  • Using a Blizzard Authenticator or Battle.net Mobile Authenticator will help protect your World of Warcraft account from theft.
  • To avoid account theft, do not login to World of Warcraft on a computer that is shared with the general public. These machines can be infected with malicious software.
  • Be wary of unofficial sites advertising for paid World of Warcraft services. They often contain malicious software that can lead to account theft.
  • To avoid account theft, do not use browser add-ons or features that allow scripts to be run in the background.
Please note there is no beta sign-up or opt-in for Cataclysm at this time.

Creating your Battle.net account: http://forums.wow-europe.com/thread.html?topicId=9941977333&sid=1

Additional reading on the Technical Support forum, including recommended programs for keeping your computer safe: http://forums.wow-europe.com/thread.html?topicId=35983697&sid=1

Please read our Battle.net Account Security page for more information:
http://eu.battle.net/security/index.html