Facebook Data From More Than 500 Million Users Found Online

Chuck Goolsbee, site director for Facebook's Prineville data centers, shows the computer servers that store users' photos and other data at the Facebook site in Prineville, Ore., on Oct. 15, 2013. Andy Tullis/The Bulletin via AP

NEW YORK—Details from more than 500 million Facebook users have been found available on a website for hackers.

While the information appears to be several years old, it’s another example of the vast amount of information collected by Facebook and other social media sites, and the limits to how secure that information is.

The availability of the data set was first reported by Business Insider. According to that publication, it has information from 106 countries, including phone numbers, Facebook IDs, full names, locations, birthdates, and email addresses.

Facebook Chairman and CEO Mark Zuckerberg testifies before the House Financial Services Committee on "An Examination of Facebook and Its Impact on the Financial Services and Housing Sectors" in Washington, on Oct. 23, 2019. Nicholas Kamm/AFP via Getty Images

Facebook has been grappling with data security issues for years. In 2018, the social media giant disabled a feature that allowed users to search for one another via phone number following revelations that the political firm Cambridge Analytica had accessed information on up to 87 million Facebook users without their knowledge or consent.

In December 2019, a Ukrainian security researcher reported finding a database with the names, phone numbers, and unique user IDs of more than 267 million Facebook users—nearly all U.S.-based—on the open internet. It’s unclear if the current data dump is related to this database.

“This is old data that was previously reported on in 2019,” the Menlo Park, California-based company said in a statement. “We found and fixed this issue in August 2019.”