The action comes after The_Alpha reportedly received a hand delivered letter to their UK home: "This letter is addressed to you by companies of the six-major United States film studios represented by the Motion Picture Association (MPA), namely Columbia Pictures Industries, Inc., Disney Enterprises, Inc., Paramount Pictures Corporation, Twentieth Century Fox Film Corporation, Universal City Studios LLLP and Warner Bros. Entertainment Inc., Netflix, Inc. and Amazon Studios LLC (represented by MPA via the Alliance for Creativity and Entertainment (ACE)), Sky UK Limited, and The Football Association Premier League Limited," the opening paragraph reads.

The letter identifies the developer as the creator of third-party software that provides "unlawful access to protected copyright works, including works owned by, or exclusively licensed to, the Content Companies" and notes their additional involvement in the upkeep of the Colossus repository, an online collection of various streaming Kodi add-ons. With Colossus gone, a popular TV show and movie streaming tool called Covenant is also currently unavailable. It's scared a number of related add-on developers, with Ares Wizard, another popular host, reportedly deciding to throw in the towel.

The crackdown suggests the MPA/MPAA-led Alliance for Creativity and Entertainment has a thorough understanding of how owners of so-called "Kodi boxes" are able to stream TV shows and films illegally. While Colossus merely hosts the tools, urlresolver and metahandler did much of the heavy lifting for streamers. Their job was to scrape video hosting sites for relevant streaming links and serve them up for tools like Covenant inside Kodi. Streamers will find it very difficult to find working video streams of their favorite content without them, but they could reappear via a new host in the future.

Sorry to say but I am stopping all development of the urlresolver, metahandler, and my other addons. I am not responsible for covenant and bennu but colossus has agreed to delete the repo too. — jsergio123 (@jsergio123) November 15, 2017

As pre-loaded Kodi boxes have surged in popularity in the past year, many of the most popular piracy-linked add-ons have targeted by rightsholders. In June, US satellite broadcaster Dish Network issued a lawsuit that targeted the TVAddons repository and forced streaming tools ZemTV and Phoenix offline.

The action will be bad news for Kodi, the the company behind the popular media center. Despite attempts to distance itself from piracy, it often finds itself implicated in news reports that focus on actions taken against infringing third-party add-ons.