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Personal data of more than half a billion Facebook users posted online, report says

Personal data of more than half a billion Facebook users posted online, report says

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FILE - In this April 14, 2020, file photo, the thumbs up Like logo is shown on a sign at Facebook headquarters in Menlo Park, Calif. The Supreme Court has sided with Facebook in a lawsuit over unwanted text notifications it sent, rejecting a claim that the messages violated the federal ban on robocalls. The high court’s ruling for the Menlo Park, California-based social media giant on April 1, 2021, was unanimous.(AP Photo/Jeff Chiu, File)

WASHINGTON — A leaker says they are offering information on more than 500 million Facebook Inc. users — including phone numbers and other data — virtually for free.

The database appears to be the same set of Facebook-linked telephone numbers that has been circulating in hacker circles since January and whose existence was first reported by tech publication Motherboard, according to Alon Gal, co-founder of Israeli cybercrime intelligence firm Hudson Rock.

Reuters was not immediately able to vet the information, which is being offered for a few euros’ worth of digital credit on a well-known site for low-level hackers, but Gal said on Saturday that he had verified the authenticity of at least some of the data by comparing it against phone numbers of people he knew. Other journalists say they have also been able to match known phone numbers to the details in the data dump.

In a statement, Facebook said that the data was “very old” and related to an issue that it had fixed in August 2019.

An attempt by Reuters to reach the leaker over the messaging service Telegram was not immediately successful.

Gal told Reuters that Facebook users should be alert to “social engineering attacks” by people who may have obtained their phone numbers or other private data in the coming months.

News of the latest leak was first reported by Business Insider.

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