Over 50 million accounts were exposed yesterday after the Facebook social platform was hacked.
Facebook logged everyone out of all 90 million accounts in order to reset digital keys the hackers had stolen – keys which are normally used to keep users logged in, could also give outsiders full control of the compromised accounts.
If you were affected, do not panic, the first order is to simply sign back into the app because they have already signed you out.
However, you don’t just have to sign back into the Facebook app as it may have affected all the apps you’ve used your Facebook account to sign into.
Facebook confirmed late on Friday that third-party apps, including its own Instagram app, could have been affected.
Facebook’s vice president of product management said: "The vulnerability was on Facebook, but these access tokens enabled someone to use the account as if they were the account-holder themselves."
Facebook said in a security update that there’s no need for anyone to change their passwords, although security experts say it couldn’t hurt to do so.
People who are having trouble logging back into the social network should visit the Help Center.
The security update added: "And if anyone wants to take the precautionary action of logging out of Facebook, they should visit the “Security and Login” section in settings.
"It lists the places people are logged into Facebook with a one-click option to log out of them all.’
After you must have done all of that, you just have to wait as Facebook continues its investigation and users scan for notifications that their accounts were targeted by the hackers.
Facebook disclosed that hackers got access to the 50 million accounts by exploiting three distinct bugs in Facebook’s code that allowed them to steal those digital keys, technically known as ‘access tokens’.
The company says it has fixed the bugs. Facebook, however, doesn’t know who was behind the attacks or where they’re based.
CEO Mark Zuckerberg – whose own account was compromised – said on Friday that attackers would have had the ability to view private messages or post on someone’s account, but there’s no sign that they did.
He said: "We do not yet know if any of the accounts were actually misused."
The hack is the latest setback for Facebook during a tumultuous year of security problems and data privacy issues.
So far, though, none of these issues have significantly shaken the confidence of the company’s 2 billion global users.
This latest hack involved bugs in Facebook’s ‘View As’ feature, which lets people see how their profiles appear to others.
The attackers used that vulnerability to steal access tokens from the accounts of people whose profiles came up in searches using the ‘View As’ feature. The attack then moved along from one user’s Facebook friend to another.
So far, Facebook team is working tirelessly to see that the issue is resolved.