The Justice Department wants the power to prosecute people that violate a terms of service agreement or "similar contractual agreement." 
The U.S. Department of Justice is defending computer hacking laws that make it a crime to use a fake name on Facebook or lie about your weight in an online dating profile. The law must allow "prosecutions based upon a violation of terms of service or similar contractual agreement with an employer or provider," Richard Downing, the Justice Department's deputy computer crime chief, will tell the U.S. Congress tomorrow.