A Facebook security bug exposed users’ personal contact information (email or phone number) to other users who were connected to them; the bug has affected 6 million accounts.
“When people upload their contact lists or address books to Facebook, we try to match that data with the contact information of other people on Facebook in order to generate friend recommendations,” the security team wrote in a blog post published today.
“Because of the bug, some of the information used to make friend recommendations and reduce the number of invitations we send was inadvertently stored in association with people’s contact information as part of their account on Facebook,” the post continued. “As a result, if a person went to download an archive of their Facebook account through our Download Your Information (DYI) tool, they may have been provided with additional email addresses or telephone numbers for their contacts or people…
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