Facebook Account Hacked Email Changed. If your email id has been hacked, then there will be an option “if you did not do this, please secure your account” click on it. Friend requests have been sent to people you don't know.
When an email is changed, we send a message to the previous email account with a special. If your account had been hacked, the hacker would have changed the appearance of your page or would have done something with it, otherwise there is no use hacking an account. If your email address has been changed, then facebook will send an email to your previously entailing email.