Dinaburg said he became interested in this topic last year at Black Hat when a friend, Robert Edmonds, and PaulVixie presented on a study of changes observed within the domain name system (DNS).
As a result, the CyberCreek domain has a permanent place on the RBL. Brunner is fighting back through Combat.org, a site dedicated to ranting about PaulVixie and the RBL. "This is a war, a nasty war, " says Brunner.