Facebook source code leak

According to the news from TechCrunch, FaceBook's source code has been leaked and published on a blog named Facebook Secrets. Generally speaking, there are two scenarios in which source code leakage occurs: one is internal source code developers leaking it, and the other is obtaining the source code by exploiting vulnerabilities in the program. Although it is not entirely certain that this is indeed FaceBook's source code, the concern arises whether the private information of tens of thousands of users is also safe?