Up to 50 million Facebook accounts were subject to a security breach on Tuesday, September 26, including the company’s founder, Mark Zuckerberg.
The company said attackers were able to exploit a vulnerability in a feature known as “View As” to gain control of people’s accounts, according to BBC News. The social media platform asked potentially affected users to re-log-in on Friday.
Facebook’s share price dropped as a result.
The hack involved hijacking access tokens used to verify identity. Many online services depend on the technology to authenticate their users, raising yet more concerns about the social network’s integrity.
Facebook announced the flaw has been since patched, but given the nature of the hack, it’s quite possible that any account linked to the affected users’ accounts would be vulnerable too. This would include Instagram. (Independent)