Someone has been ghosting me on an online game

Okay so heres what happened i'm in the lobby of an online game (empire earth 2) and suddenly i start swearing and raving but its not me typing. I was able to prove that someone was ghosting (dont know if thats the proper name for it but thats what the other guys in the lobby called it) me because the Ghoster made a small mistake when imitating my username. Anyway i would like to know if there is anyway i can stop this happening to me. Your help would be much appreciated.

cmon can someone give me some help. anyone??

Contact an admin and report the user's name...

they will have a small difference in account names, it will be something like .yourname or something like that.

Email the owners of the site and let them know exactly what happened, time etc.

It sounds like a hacker found a vulnerability in the site and it needs to be updated/patched.
Chances are your not the only one its happening to.
The owners will be really grateful that you've pointed it out to them.
Hope this helps.

This guy was doing it to everyone and it looked exactly like that user talking talking he kept ghosting different users at the same time but i know his user now so i'll report him thanks for your help.