That's a sad story, it is really disappointing when your account had hacked by strangers especially if it so old in this forum and has a good reputation, it's hard to have that kind of account because It takes so many experiences and knowledge, because of that thing you have to start again from being a newbie rank, hoping that you won't give up just because of what happened on you.
Make it a lesson for you, so you would add more security to your accounts. We should not be contented that our account is still okay, we should do more secured ways so in the future we would not have problems.
You can read this thread if your account got hacked :
Recovering hacked/lost accounts. And during the recovery process, you can give red trust or create a flag on your hacked account, so that people who want to transact with that account will be more careful. Let say, the red trust and flag as an alert.
That is a good thread from @themos, try to follow the steps so you can recover your account, but if nothing happens, just report the account.