As the world is coming to terms with the revelation that the social media giant Facebook’s almost 50 million users were left exposed by a security flaw, there are now clues that a vulnerability may have led to the hack.
It is learnt that the company blamed the attackers were able to exploit a vulnerability in a feature known as “View As” to gain control of people’s accounts.
The breach was discovered on Tuesday, Facebook said.
The tech giant has also informed the police on the massive data breach.
Users that had potentially been affected were prompted to re-log-in on Friday.
But the Facebook said that the flaw has been fixed, as per the assurance of the firm’s vice-president of product management Guy Rosen.
Facebook – which saw its share price drop more than 3% on Friday – has more than two billion active monthly users.
Cyber security experts said that the Facebook’s “View As” function is a privacy feature that allows people to see what their own profile looks to other users.
It is speculated that the attackers found multiple bugs in this feature that allowed the hackers to steal Facebook access tokens.>