Viacom sues YouTube in May 2008, Viacom brought a $1 billion lawsuit against YouTube for allegedly failing to protect the rights of copyright owners. The most common cases of copyright infringement involve using songs in a film or video without permission of the copyright holder, or placing segments of movies or music videos on websites where it is easy for the public to download them. Such actions have cost studios millions of dollars in royalties. Therefore, the giants of the entertainment industry have begun cracking down on websites such as YouTube. In order to use a persons work permission from the user must be in place.