Project Organizer of TCNiSO, a group specializing in cable modem hacking. On November 2nd, 2009 was charged in Boston with conspiracy and aiding and abetting computer intrusion and wire fraud.
Has called his indictment "complete bullshit."
Author of the book "Hacking the Cable Modem"
TCNiSO was taken down as a direct result of this indictment.
http://www.wired.com/threatlevel/2009/11/derengel/
http://nostarch.com/cablemodem.htm
http://www.tcniso.net/
http://www.pcworld.com/article/181236/cable_modem_hacker_busted_by_feds....
http://boston.fbi.gov/dojpressrel/pressrel09/bs110209.htm