I just contacted him through the Contact page of his website. He replied. I am not sure if he's a real hacker but he's the owner of bolumizleyin.com which has plenty of backlinks from several .edu websites.
@diamondhead It seems I can't reply to messages past a certain depth so I'll respond to your latest comment in the previous one. I am from Germany. I wrote you on twitter.
zeynalov, please report him to a police department or a related department in Turkey. if you don't know how to do it, I can help you on this as a Turkish citizen.