Facebook:'View As' function hacked... suspicious of 50 million accounts exposure
Facebook asked users suspected of revealing personal information to log in to their Facebook account again
The personal information of Facebook users was exposed again.
Facebook said there was a security problem, exposing 50 million user accounts.
The suspected hacking attack was aimed at a vulnerability in Facebook's'view as' feature, Facebook said.
Facebook said it had first discovered the hacking facts on the 25th (local time) and requested an investigation from the relevant investigative authorities.
In addition, users suspected of revealing personal information were encouraged to log out of their Facebook account and log in again.
Guy Rosen, vice president of Facebook, said that the function of the problem was corrected, and that the account suspected of being exposed and an additional 40 million personal accounts were reset as a precaution.
Facebook also revealed that the hacking may have exposed logins from other services such as Airbnb and Tinder linked to Facebook accounts.
Where did it happen?
Facebook didn't reveal which countries and regions were exposed accounts.
However, it notified the report to the data security authorities in Ireland, which has Facebook's European branch.
They also advised users to log in to their accounts again, but said they did not need to change their passwords.
Vice President Guy Rosen said, "It is still in the early stages of the investigation, so we cannot confirm whether users' personal information has actually been leaked."
Meanwhile, Facebook founder Mark Zuckerberg's account is also known to be exposed to this hacking attack.
What is'View as'
Facebook's'View As' feature allows individuals to check how their information looks to other users.
Hackers used a lot of bugs in this feature, "it appears to be aiming for a token that can access personal accounts," Facebook said.
"Token is a kind of digital key that keeps users logged in to Facebook and prevents entering passwords each time they visit," he explained.
Facebook has previously been investigated for finding out that UK-based data analytics firm Cambridge Analystica (CA) stole a large amount of Facebook user information.
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