Which Act makes it a crime for unauthorized persons even to view—let alone copy or damage—data using any computer across state lines?

The Computer Fraud and Abuse Act (CFAA) is the act that makes it a crime for unauthorized persons to view, copy, or damage data using any computer across state lines. This law was enacted by the United States Congress in 1986 as an amendment to existing computer fraud law (18 U.S.C. § 1030), which had been included in the Comprehensive Crime Control Act of 1984. The CFAA prohibits accessing a computer without authorization, or in excess of authorization, and thereby obtaining information from any protected computer if the conduct involved an interstate or foreign communication. The law is designed to protect network users from invasion of privacy, theft of information, and financial loss.