Illegal Copies of Movies on YouTube Create New Challenges for Studios

YouTube has long tried to tamp down piracy, but users who upload stolen films and television shows have employed new tactics to evade the platform’s detection tools, research showed, including cropping films and manipulating footage. The findings of the research shed new light on the copyright issues that once threatened to upend YouTube’s business and also show how advertisers have unwittingly supported illicit content on YouTube, and they provide rare data about piracy on the platform.