This report discusses the proposed Cyber Security Information Act of 2000 (H.R. 4246), which is intended to remove barriers to information sharing between government and private industry in order to better address threats to the nation's critical infrastructure. The concern over cyber threats is well placed. While the explosive growth in interconnectivity has contributed immeasurably to the nation's economy and well being, it also presents significant risks to our nation's computer systems and to the critical operations and infrastructures they support, including telecommunications, finance, power distribution, emergency services, law enforcement, national defense, and other government services. Accordingly, government officials are increasingly concerned about attacks from individuals and groups with malicious intentions, such as terrorists and nations engaging in information warfare. Nevertheless, because the federal government does not own all of our nation's critical infrastructures, it is limited in what it can do to protect these assets, and solutions must be tallored sector by sector, through partnerships with sector representatives that address threats, vulnerabilities, and possible response strategies.