Maybe it's karma or maybe it's just the nature of the hacking world, but infamous hacktivist collective Anonymous was recently hacked by one of its own, according to postings from administrators of the groups' network.
Postings on a site belonging to a subgroup called Anonops claim an insider named Ryan hijacked one of the group's network's domains. A posting on the group's site claimed the rogue member who goes by the name of Ryan had control over one of the domain names, therefore making it impossible to continue using that name. The group suspects but is not sure of another domain name being confiscated.
The postings also claim Ryan is blocking service attacks in protest of the group.