Hacker posts Facebook bug report on Zuckerberg's wall

A Palestinian information system expert says he was forced to post a bug report on Mark Zuckerberg's Facebook page after the social network's security team failed to recognize that a critical vulnerability he found allows anyone to post on someone's wall. The vulnerability, which was reported by a man calling himself ‘Khalil,' allows any Facebook user to post anything on the walls of other users - even when those users are not included in their list of friends. He reported the vulnerability through Facebook's security feedback page, which offered a minimum reward of US$500 for each real security bug report.

However, the social network's security team failed to acknowledge the bug, even though Khalil enclosed a link to a post he made on the timeline of a random girl who studied at the same college as Facebook CEO Mark Zuckerberg. 

"Sorry, this is not a bug," Facebook's security team said in response to Khalil's second report, in which he offered to reproduce the discussed vulnerability on a test account of Facebook security expert. After receiving the reply, Khalil claims he had no choice but to showcase the problem on Mark Zuckerberg's wall.