“View As” Flaw

Facebook’s “View As” feature was a way for users to see their profiles through the “eyes” of their friends (or strangers). But there was buggy code within that feature that allowed it to be exploited by hackers. The vulnerability was found last year and Facebook says it could have impacted about 30 million accounts.

According to reports, the View As vulnerability may have allowed hackers to gain access to user profiles by stealing so-called access tokens. Some of the data that was obtained during the hack included email addresses, phone numbers, gender, religion, device information, and location, among others. At this point, it isn’t clear who is behind the attack, however.