Piracy sites are preventing users of Windows 10 from using their trackers. These are the servers that allow all of the computers downloading files using torrents to talk to one another, which allows them to find and request the files that they need. Without trackers, torrents won’t work.

Pirates have released statements that say, “Windows 10 sends the contents of your local disks directly to one of their servers.” They also claim that Microsoft is working with a company called MarkMonitor to identify people who are downloading from the internet.

There are genuine concerns that Windows 10 sends personal information about computers to Microsoft, even if users have changed all their settings to tell it not to do so. But there is less concrete evidence to support the pirates’ most worrying claims.

The controversy began because of a line in Microsoft’s service agreement. This allows Microsoft to issue updates that will stop users “playing counterfeit games,” according to TorrentFreak.

Several torrent trackers, including iTS, have banned Windows 10 users, with others set to follow suit.