Teen hackers Defiant and EBK apparently used “social engineering” to disrupt Comcast Web sites and redirect user e-mail. Defiant and EBK used the Domain Name System and registrar Network Solutions to reroute and deface Comcast sites. Defiant and EBK took comcast.net down for more than two hours and put obscenities in the WHOIS information.
See also: How was Comcast.net hijacked? http://www.newsnow.co.uk/A/278825466?-18613