People are receiving friend requests from a "new" account using your name and photo (this is often a rather than a direct hack). How Hackers Get In What to do if your account has been hacked - Facebook
: Look for a message from Facebook regarding an email or password change. These emails often contain a special link that allows you to reverse the change and secure your account if it wasn't you. Signs You’ve Been Hacked Your password or email address has been changed. fb-hack
: If possible, attempt recovery from a phone or computer you have previously used to log into Facebook. Facebook's security algorithms are more likely to trust the request from a recognized device. People are receiving friend requests from a "new"