Hacking Question Advice Needed?

[Max Hallam]

It is more likely that your email account was compromised to then gain access to your Facebook account. If you have anything connected to your email account that would give away your IP address then yes, it is entirely feasible for a hacker to connect through a proxy and mask their traffic as yours - making it seem as if you were the only one ever to access the account.

Barring that possibility, hackers can connect through proxy servers and notably, the software known as Tor which reroutes your connection through hundreds of different countries around the world. Unless the hacker was positively brain-dead, they would have left nothing that allows them to be traced back.