Facebook Hack 2021: How to Check if Your Email, Phone Number Have Been Leaked Facebook has been breached by data hackers and over 500 million users with their personal information have been exposed. Firtunately, new tools are developed to help you check if your personal information has been leaked. Photo : Joshua Hoehne/Unsplash Unfortunately, Facebook has been breached by data hackers and over 500 million users with their personal information have been exposed. The social media giants is currently finding solutions to resolve the issue; however most of the damage is done. For those concerned, new tools are developed on the internet to help you check if your personal information has been leaked.