his can be caused by logging in from a new location, but it may also signal an attempt to compromise your account.
If you have registered for Battle.net SMS Protect, you can unlock your account by selecting “Can’t log in,” then selecting “I’m currently locked out of my account,” and following the steps provided. If you have not registered for Battle.net SMS Protect, or if you feel that your account’s security is at risk, please follow the steps below.
Step 1: Secure Your Computer
Ensure that your computer is free from any malicious programs, as a password change alone may not deter future attacks. Visit our Account Security website to learn how to protect your computer from unauthorized access.
Step 2: Secure Your Email Account
Choose a new password for your email account and review your email for any filters or rules you did not create. For more information on securing your email account, visit our Account and Computer Security page.
Step 3: Choose a New Password
Change your password to resume using this Battle.net account, as your former password no longer grants access to any login-protected Battle.net account service or game. Visit our Password Reset page to begin the password change process.
Once you’ve regained access to your account, you can add additional security with Battle.net SMS Protect , a free service that allows you to unlock your Battle.net account on your own with a few simple steps. For more information, see the SMS Protect FAQ
Regards,
Blizzard Entertainment
http://battle.net/support
Online Privacy Policy