A glitch in a test version of Facebook’s Web site inadvertently exposed the birthdays of 80 million members. The bug was discovered over the weekend by Sophos Senior Technology Consultant Graham Cluley. Facebook allows users to control who sees private information such as their birth date. The company could not say exactly how long this data was exposed or how many people viewed the beta site. Facebook says the bug was patched within hours of the discovery; it was not known how long it was exposed.”]
Source: https://www.csoonline.com/article/2123018/facebook-bug-leaks-members–birthday-data.html