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Facebook Has Hosted Stolen Identities and Social Security Numbers for Years


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The social security numbers, addresses, phone numbers, and alleged credit card numbers of dozens of people are being advertised and sold on Facebook. The internet giant deleted some of them after Motherboard flagged the posts.


Cybercriminals have posted sensitive personal information, such as credit card and social security numbers, of dozens of people on Facebook and have advertised entire databases of private information on the social platform. Some of these posts have been left up on Facebook for years, and the internet giant only acted on these posts after we told it about them.


As of Monday, there were several public posts on Facebook that advertised dozens of people’s Social Security Numbers and other personal data. These weren’t very hard to find. It was as easy as a simple Google search.


Most of the posts appeared to be ads made by criminals who were trying to sell personal information. Some of the ads are several years old, and were posted as “public” on Facebook, meaning anyone can see them, not just the author’s friends.


Independent security researcher Justin Shafer alerted Motherboard to these posts Monday.


“I am surprised how old some of the posts are and that it seems Facebook doesn’t have a system in place for removing these posts on their own,” Shafer told Motherboard in an online chat. “Posts that would have words flagged automatically by their system.”


On Monday, Motherboard reached out to Facebook asking for comment, and we included a sample Google search to illustrate the problem. A Facebook spokesperson answered saying they’d look into it. As of this writing, we haven’t received a comment, but some of the posts that appeared in the Google search sample we flagged have been removed.


Matt Mitchell, a digital security trainer, said that it should be “easy” for Facebook to stop and prevent these posts.


“On their end it's pure laziness to wait for an abuse report to stop post that are following a doxing template,” Mitchell told Motherboard in an online chat.


At least some of the data in these posts appears real. Motherboard was able to confirm the first four digits of the social security numbers, names, addresses, and dates of birth for four people whose data appears in a post from July 2014. At least three social security numbers, names, addresses, and dates of birth that appear in a different post from February 2015 also appear to be real, based on records searches. Motherboard called six of these victims but was unable to reach any of them. In some cases, we reached voicemail inboxes and the recorded greetings corresponded to the names contained in the Facebook posts..


Facebook has been sluggish at policing these kinds of posts. Last week, security journalists Brian Krebs found more than 100 Facebook groups—some with thousands of members—whose members exchanged hacked or stolen data. Facebook deleted the groups after Krebs alerted the company.


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