Facebook revealed on Friday that it has recently uncovered a major security breach affecting nearly 50 million users, which may result in the user's account being stolen by the thieves.
Hackers abused a vulnerability in "View As", a feature that allows people to see what their personal profile looks like to others. So they could steal access tokens, which allowed them to hijack accounts.
The problem was discovered on Tuesday and has already been resolved. In a statement, Facebook noticed that it is aly aware of law enforcement. The company has reset the access tokens for people who are known to be affected, as well as another 40 million accounts that have been subjected to & # 39; Look as & # 39; search.
"We reset the access to the nearly 50 million accounts we know have been compromised to protect their security, and we also take the precautionary step of resetting access to another 40 million accounts that are subject to & # 39; Look like "out-of-style" in the past year, "Facebook said in a statement. "As a result, about 90 million people will now have to re-enroll in Facebook or one of their apps using Facebook Login, and after they have logged in again, people will be notified at the top of their news feed, explaining what has happened."
"View As" is temporarily disabled while the company is performing a security analysis. However, the company aly knows that the vulnerability occurred with a July 2017 change in video uploads.
It is not yet known whether the hacked accounts were abused or who the perpetrators were.
Facebook has handled several security breaches in the past. The most famous of these is probably the Cambridge Analytica debacle, when the public learned very well from Facebook that CA had built electoral profiles by scraping data without permission. Facebook was put to the test by governments because they had not disclosed the situation years ago.