New facebook exploit found By Mauritania attacker

Mauritania Attacker contacted W3bsecurity again via mail to let us know that a New Exploit found called Text Load Injection in Facebook.com which adds their own message

(HACKED BY MAURITANIA ATTACKER) in the Facebook Login Page.
Link (Sign Out From Facebook First) https://apps.facebook.com/r.php?email=HACKED%20BY%20VI%E1%BB%86T%20NAM%20IOS