How to know if your Facebook account is being harked or not .Funny but true..

It very simple all you need is just to follow the steps below

1. Go to any comment box on your facebook account
2. Type @[4:0] ... N.B:Do not leave any space when typing it 
3. Then publish it 
4. If it shows Mark Zuckerberg it means your account is still in safe Condition

If it didnt work then i think is safer for you to change your password.. For further security..