I don't know the technical details but Winevine claims to have a system for watermarking content, which may allow them to trace the origin of ripped content bac

I don't know the technical details but Winevine claims to have a system for watermarking content, which may allow them to trace the origin of ripped content back to the set of keys which decrypted it so they can be revoked. https://www.digimarc.com/resources/widevine-announces-digital-watermarking-technology-further-track-distribution-content https://www.digimarc.com/resources/widevine-announces-digita...