Speaking with Tashi from Net-Integration, the site has been just shut down due to a series of spam emails being sent out. Do not open any emails from Net-Integration. It has been reported the emails do not convey viruses, but a link -- if followed -- delivers a trojan. The community is assisting in the investigation of this issue. A thread is open here for questions or comments.
CastleCops - Net-Integration Troubles - Important News