This suggests a possible solution: technological protection backed up by legal protection against software designed to defeat it. In the early years, providers of copy protection tried that approach. They sued the makers of software designed to break the protection, arguing that they were guilty of contributory infringement (helping other people copy copyrighted material), direct infringement (copying and modifying the protection software in the process of learning how to defeat it) and violation of the licensing terms under which the protection software was sold. They lost.[7]