If your Activision account ever gets accessed by someone you don't know or if you suspect your account credentials have been exposed, you should:
 
  1. Change your Activision account password immediately following the strong password guidelines above.
  2. Unlink the accounts you have linked to your Activision account.
  3. Change the passwords for the accounts you've unlinked.
  4. Relink your accounts to your Activision account.
  5. Enable two-factor authentication to secure your account.