It seems it's quite hard to keep private data actually private, even for the almighty Facebook. A database with telephone numbers of possibly hundreds of millions of Facebook users was spotted online, totally unprotected. It is unknown who uploaded the database and why.
The database contained 419 million entries, according to Facebook, half of them are duplicates, meaning that it would be the data of several hundred million users. The database showed unique IDs of Facebook users, linked to their telephone numbers and in some cases also with name, gender and country. Facebook IDs are unique and can be traced back to accounts. According to a report from TechCrunch, the dataset had included 133 million records from U.S.-based Facebook users, 18 million from the U.K., and over 50 million from Vietnam...
Read more: Facebook database holding 419 million user entries was posted online