Your friend is likely compromised if there is an authenticator he does not recognize on the account, Thësituätiön. =>.<= Unfortunately, I am unable to resolve the situation for him, but I can point him in the proper direction.
He'll want to fill out our Account Recovery Webform below, though he should first take the time to ensure that his computer is secure before attempting to regain access to his account. I've provided various articles that should help him in his quest for security. >^.^<