Authenticater on Account... I don't have one!

If an Authenticator has been placed on your account without your permission, your account has been compromised. I strongly encourage you to scan your computer for malicious software as soon as possible so that you might identify and remove any account security threats. For more information on how to secure your computer and recover your account, please visit:

What to do if Your Account Has Been Compromised:
http://us.blizzard.com/support/article/30796

Account and Computer Security:
http://us.blizzard.com/support/article/30794

If you have any questions, please let me know.

I'm afraid that a post on the Customer Service forum will not suffice. You'll need to contact our Billing department using one of the following methods to request Authenticator removal; calling will likely yield the quickest results.

Billing and Account Services

• Email: [email protected]
  
• Web form: http://us.blizzard.com/support/webform-us.xml?gameId=11
  
  Live Representatives are available every day from 7:00 AM to 8:00 PM PDT
  For phone assistance please call: 1 (800) 592-5499 || 1 (800) 59-BLIZZARD
  
  • Players in Australia should call 1-800-041-378
    
  • Players in Singapore should call 800-2549-9273
    
  • Players in Chile should call 1230-020-5554
    
  • Players in Mexico should call 001-888-578-7628
    
  • Players in Argentina should call 0800-333-0778
    
  • All other international players should call: (949) 955-0283

Q u o t e:
do i need the registration key in order to get the authenticator taken off

If it was added by a malicious party, you will not need the Authenticator's serial number to have it removed. In some cases, additional identity verification may be necessary, but in some cases we're able to clearly identify when the Authenticator was added by a compromising party without having to request additional forms of identification.