Almost 50 million Facebook accounts were affected by a major cyber security breach. Facebook said it has already fixed the vulnerability and informed law enforcement. The company said it had discovered a loophole in the “View As” feature which allowed cyber criminals to gain control of the affected accounts. As a precaution, Facebook has temporarily disabled the feature. Facebook says users don’t need to reset their passwords as they will reset token accounts in the background. One of the measures that Facebook users can take right now is to log out of all sessions and log in again. They can also reset their passwords right now and add two-step verification.