Source: wikibot/decss

= DeCSS
{wiki=DeCSS}

DeCSS is a computer program that was developed to decrypt content protected by the Content Scramble System (CSS), which is used to prevent the unauthorized copying of DVDs. CSS is a form of digital rights management (DRM) that encrypts the content on DVDs to restrict access and copying. DeCSS became widely known in the late 1990s and early 2000s, particularly due to legal battles surrounding copyright and digital media.