The exposed server contained more than 419 million records over several databases on users across geographies, including 133 million records on U.S.-based Facebook users, 18 million records of users in the U.K., and another with more than 50 million records on users in Vietnam.
A series of unprotected databases containing details of Facebook user’s accounts and phone numbers have been found floating about on a publicly accessible server.
Each record contains the Facebook user’s unique ID and phone number listed on their account.
Facebook are saying the data was scraped prior to the company cutting off access to phone numbers through the app but once again raises many security & privacy concerns over the platform.
Source: A huge database of Facebook users’ phone numbers found online | TechCrunch