Here's how to find out if your Facebook account was hacked

Here's how to find out if your Facebook account was hacked

"Within two days, we closed the vulnerability, stopped the attack, and secured people's accounts by restoring the access tokens for people who were potentially exposed", Facebook said.

Two weeks ago, Facebook revealed its discovery that it was the victim of a data breach.

The FBI is investigating the attack but asked the company not to discuss who may have been behind it, Facebook said.

Perhaps the best news from Facebook is that only 30 million accounts were affected, rather than 50 million it said originally.

Facebook shares have dropped by 1.1 percent since the statement was released.

Facebook cut the number of affected users from its original estimate after investigators reviewed activity on accounts that may have been affected.

A company executive said on a conference call that Facebook will not provide country-by-country breakdowns of the affected users.

The security breach comes at a time when Facebook is already under fire data-privacy lapses.


The attackers used the "view as" flaw to breach the accounts of their friends, then used a tool they developed to expand to friends of friends and beyond. However, hackers were able to read messages sent to users who were administrators of Facebook pages.

Facebook first realized it was under attack after noticing a spike in activity on September 25.

Facebook's latest vulnerability has existed since July 2017, but the company first identified it in mid-September after spotting a fairly large increase in the use of its "view as" feature. For 15 million, they obtained names, phone numbers, and email addresses, if present in their profiles.

For 400,000 of the accounts, which these attackers used to seed the process of gathering login tokens, personal information, such as "posts on their timelines, their lists of friends, Groups they are members of, and the names of recent Messenger conversations" and, in one instance, actual message content, were compromised. In additional good news, the company said hackers weren't able to access more sensitive information like your password or financial information.

It said its statutory investigation into the breach, and Facebook's compliance with its obligations under GDPR, was continuing.

He said protecting elections is a "big focus" for Facebook and that it has many teams "ensuring that we can protect the security of the upcoming elections, as well as all other elections around the world".

And Facebook is quick to point out that the attack appears limited to Facebook personal accounts, not Messenger, Instagram, WhatsApp, Oculus, or other Facebook products.

The company said that it may still not know the full extent of the attack and wasn't ruling out the possibility of other "smaller-scale attacks" linked to the breach.

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