iSKORPiTX is a known mass defacer from Turkey. In 2006, IsKorptix was responsible for the biggest Mass Website Defacement in webhosting history. He hacked 21,549 websites in one shot, with a total estimated amount of more than 40,000 websites.
[May 28, 2012] Total notifications in Zone -H: 470,773 of which 78,011 single ip and 392,762 mass defacements.
He has a Facebook Fan Page that has over 800 likes.
http://www.zone-h.org/archive/notifier=iskorpitx
http://fasilkomumbdwif06mercubuana.blogspot.com/