Facebook Uncovers 'Security Issue' Affecting Nearly 50 Million Accounts

Facebook this morning announced that its engineering team on Tuesday discovered that hackers have exploited a vulnerability in its code, allowing hackers to steal Facebook access tokens for almost 50 million accounts.

According to Facebook, hackers took advantage of security flaws in its "View As" code, which is a feature designed to let people see what their profile looks like to someone else. The Facebook access tokens that were stolen are digital keys that allow people to stay logged in to Facebook.

This attack exploited the complex interaction of multiple issues in our code. It stemmed from a change we made to our video uploading feature in July 2017, which impacted "View As." The attackers not only needed to find this vulnerability and use it to get an access token, they then had to pivot from that account to others to steal more tokens.

It is not clear whether the accounts affected were misused or have had information accessed at this time, and Facebook does not know who executed the attacks.

Facebook says that the vulnerability has been patched at this time, and authorities have been informed. Facebook has reset the access tokens of the nearly 50 million accounts that were affected along with another 40 million accounts that have been subject to a "View As" lookup in the last year.

Customers who have been logged out of their apps will receive a message about what happened once they log back in.

While a security review is conducted, Facebook is turning off the "View As" feature that was used for the hack.

Facebook says that it is "sorry this happened" and that people's privacy and security "is incredibly important." No one needs to change their passwords, according to Facebook, but those concerned can visit the "Security and Login" section in settings to log out of all devices at once.

Today's Facebook hack comes just a day after Facebook was found to be using phone numbers that customers provided for 2-factor authentication for ad targeting purposes and shadow contact building.

Top Rated Comments

(View all)
Avatar
26 months ago
Facebook is the worst thing ever. It destroyed the society and made people dumb.
Score: 25 Votes (Like | Disagree)
Avatar
26 months ago
Never had a FB account.
Score: 22 Votes (Like | Disagree)
Avatar
26 months ago
Stop using Facebook people! There is a better and safer alternative to each fb feature. I can't think of a single good reason to still be on Facebook - there are none.
Score: 22 Votes (Like | Disagree)
Avatar
26 months ago
even more of a reason to delete your Facebook...Get on Gab!
Score: 21 Votes (Like | Disagree)
Avatar
26 months ago

1) My work group is on FB chat. Gonna be a pain to suggest a different one.
2) Dank memes.

1. get a better job.

2. all the good memes are on reddit first.
Score: 13 Votes (Like | Disagree)
Avatar
26 months ago
what an awful company.
Score: 12 Votes (Like | Disagree)

Top Stories

Here's How You Can Download iOS 14 and iPadOS 14 Around the World [It's Out]

Wednesday September 16, 2020 2:36 am PDT by
Apple's official public release of iOS 14 and iPadOS 14 dropped on Wednesday, September 16, just a day after the company released the Golden Master to third-party developers. Also set to be made available to the general public for the first time are watchOS 7 and tvOS 14. Getting Started With iOS 14 Video Click image to watch iOS 14 Getting Started While that's left a lot of developers...

When Will the iPhone 12 Launch? Here's What We Know

Wednesday September 16, 2020 6:12 am PDT by
Yesterday's "Time Flies" Apple event saw the release of the Apple Watch Series 6, Apple Watch SE, iPad 8, and iPad Air 4, but no new iPhone models. Rumors before the event strongly alleged that it would not see the unveiling of new iPhones, with many reports pointing to an October launch. The lack of new iPhone models yesterday seems to confirm that the iPhone 12 lineup will not appear...

Apple Releases iOS 14 and iPadOS 14 With Home Screen Redesign, App Library, Compact UI, Translate App, Scribble Support, App Clips, and More

Wednesday September 16, 2020 12:48 pm PDT by
Apple has released iOS 14 and iPadOS 14, the newest operating system updates designed for the iPhone and iPad. As with all of Apple's software updates, iOS 14 and iPadOS 14 can be downloaded for free. iOS 14 is available on the iPhone 6s and later, while iPadOS 14 is available on the iPad Air 2 and later. The updates are available on all eligible devices over-the-air in the Settings app. To ...

Apple Releases Safari 14 for Mac Ahead of macOS Big Sur Launch

Wednesday September 16, 2020 1:40 pm PDT by
macOS Big Sur didn't launch alongside iOS 14, iPadOS 14, tvOS 14, and watchOS 7 today, with the update coming later this fall, but Apple did release the Safari 14 update for macOS Catalina and macOS Mojave users. Safari 14 brings improved performance, customizable start pages, a Privacy Report to see which cross-site trackers are being blocked, and a new tab bar design that provides tab...

Apple Updates AirPods 2 and AirPods Pro Firmware to Version 3A283

Monday September 14, 2020 11:24 am PDT by
Apple today released new 3A283 firmware updates for the second-generation AirPods and the AirPods Pro. The second-generation AirPods are being updated from the 2D15 firmware they were previously running, while the AirPods Pros are being updated from the 2D27 firmware they had installed previously. Apple does not provide details on what's included in refreshed firmware so we don't know what's ...

iOS 14 Picture in Picture No Longer Working With YouTube's Mobile Website in Safari [Without Premium]

Friday September 18, 2020 12:21 pm PDT by
Apple in iOS 14 added Picture in Picture to the iPhone, a feature designed to let you watch a video in a small screen on your device while you continue to do other things on the phone. When Picture in Picture was working with YouTube The YouTube app doesn't support Picture in Picture, but up until yesterday there was a functional workaround that allowed videos from YouTube.com to be watched...

Hands-On With the New Apple Watch Series 6 and Apple Watch SE

Friday September 18, 2020 1:19 pm PDT by
Today's the official launch date for the Apple Watch Series 6 and the Apple Watch SE, both of which Apple announced on Tuesday. We picked up a couple of the new models and thought we'd give them a quick look for MacRumors readers thinking of ordering a new watch. Apple Watch Series 6 & Apple Watch SE Hands-On! When it comes to design, both the $399 Series 6 and the $279 SE look just like...

iOS 14.2 Beta Adds New Shazam Music Recognition Feature for Control Center

Thursday September 17, 2020 3:36 pm PDT by
Apple today released the first beta of iOS 14.2 to developers for testing purposes, and the new update introduces a Music Recognition control for the Control Center. The new feature lets you discover music playing around you and it recognizes the music playing with in apps, even when you're wearing AirPods. Songs pop up as notifications, and you can tap to listen in Apple Music....

8 Third-Party Home Screen Widgets That You Can Try Out Now on iOS 14

Wednesday August 5, 2020 12:56 pm PDT by
One of the biggest new features of iOS 14 is Home Screen widgets, which provide information from apps at a glance. The widgets can be pinned to the Home Screen in various spots and sizes, allowing for many different layouts. When the iOS 14 beta was first released in June, widgets were limited to Apple's own apps like Calendar and Weather, but several third-party developers have begun to test ...

Apple Releases watchOS 7 With New Watch Faces, Family Setup, Sleep Tracking, Handwashing Help and More

Wednesday September 16, 2020 12:47 pm PDT by
Apple today released watchOS 7, the newest version of the watchOS operating system designed to run on modern Apple Watch models. The watchOS 7 update comes after several months of beta testing. ‌watchOS 7‌ can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General > Software Update. To install the new software, the Apple Watch needs to have at...