Cyberthreat, Government Network Operations, and the Fourth Amendment

"Many corporations have intrusion-prevention systems on their computers' connections to the Internet. These systems scan the contents and metadata of incoming communications for malicious code that might facilitate a cyber attack, and take steps to thwart it. The United States government will have a similar system in place soon. But public and private intrusion-prevention systems are uncoordinated, and most firms and individual users lack such systems. This is one reason why the national communications network is swarming with known malicious cyber agents that raise the likelihood of an attack on a critical infrastructure system that could cripple our economic or military security."