From Naked Security: https://nakedsecurity.sophos.com/2015/08/25/pirate-sites-ban-windows-10-over-privacy-worries/ [sophos.com]
There's been a good amount of privacy freak-out over Windows 10. Concerns have been sparked by things such as the Wi-Fi password sharing feature and the fact that Windows 10 by default shares a lot of your personal information - contacts, calendar details, text and touch input, location data, and what Ars Technica calls "a whole lot more" - with Microsoft's servers.
It's gotten to the point where, as TorrentFreak reports, some smaller pirate sites have become so concerned that Windows 10 systems will phone home with too many hints about their users, that the sites' administrators have started blocking Windows users from the BitTorrent trackers hosted on their sites.
One of those sites, iTS, released a statement which referred to Windows 10's "outrageous privacy violations", which, it says, include...
[sending] the contents of your local disks directly to one of their servers.
Thus, since Thursday, Windows 10 has officially been banned from iTS until "special versions" surface that undo this purported privacy wreckage.
On a personal note, I'd like to see this "Special Version" too.