PC Mag 
August 19, 2013
If at first you don’t succeed, post a message on Mark Zuckerberg’s wall. As in, Mark Zuckerberg’s personal wall – aside from driving by Facebook headquarters with a loudspeaker in hand, we can think of few better ways to get the CEO’s attention, especially if you aren’t his Facebook friend to begin with.
Palestinian security researcher Khalil Shreateh uncovered a glitch in the Facebook matrix that would allegedly allow anyone to post to the Facebook Walls of any other user – a big no-no in Facebook land, for one’s Wall is supposed to be reserved only for one’s friends to post on, assuming normal security settings.
Shreateh twice sent reports of the bug  to Facebook via the company’s bug-disclosure and bounty program. The first time, Facebook security representative “Emrakul” couldn’t see the results of Shreateh’s work – presumably because Emrakul wasn’t actually friends with the person who Shreateh used as a proof-of-concept for the loophole. The second time around, Emrakul told Shreateh that his findings were “not a bug.”