Being Stalked and Life Ruined by Cyberstalker

Hello,

I am writing because I am being stalked by an old roommate of mine, who is using complex code and keyloggers to steal passwords and ruin my life and of those around me including family and friends. I noticed, he is on an affiliate site however “http://kataribe.naist.jp/”? How can I get help to find out who is behind an account on that site or here? Is it possible? The police, FBI and other Law Enforcement have not been any help at all, so I was hoping that maybe someone on here can help since I’m not a paid member and contact an adminstrator myself.

Thanks.