Security researchers have found a trove of more than 400 million Facebook users containing phone numbers on an unprotected server.
TechCrunch found a database on a server without any protection or encryption, meaning anyone could have found and accessed the database of users.
The database include 419 million records included unique Facebook IDs and the phone number listed on the account. Some also included the user's birth date, location and gender.
"This dataset is old and appears to have information obtained before we made changes last year to remove people's ability to find others using their phone numbers," the statement said.
"The dataset has been taken down and we have seen no evidence that Facebook accounts were compromised. The underlying issue was addressed as part of a Newsroom post on April 4th 2018 by Facebook's Chief Technology Officer."
