Many Internet service providers keep records of user behavior—though not for long. The US government would, once again, like to change that by adopting some form of "data retention" requirement for ISPs. That's because, as Jason Weinstein of the Department of Justice put it today, "data retention is [now] fundamental to the Department’s work in investigating and prosecuting almost every type of crime."
That is a difficult dilemna. It would appear that if the government knows where the child pornographer sites are located on the internet they could easily stop them, either by legal means or denial of service attacks. I to not know which is worse: child porn users or child porn suppliers. Obviously the government leans toward the users. But again, maybe the government is the supplier. Who knows?
Both need to be stopped. But our liberties also need to be protected while an effective stategy is applied to stop perversion.
Their IP addresses can be stopped by DOS attacks or the addresses can be blocked much like China/U.S. does to addresses. It can easily be done if there was a political will to do so.