Re: So MS lost the keys already
Absolutely. As with all DRM, once again it is demonstrated that, where security is concerned, a closed-source "solution" is just a disaster waiting to happen.
What this means is that there are people out there who could conceivably wrap a film with the proper DRM security (without MS' knowledge) and serve that up to unsuspecting victims in order to grab their IP address. For Tor, which is specifically a platform supposedly enabling you to hide it, it is nothing less than a targeted attack.
I suppose this could also blow through most anon proxies as well, though I may be wrong.
And, given that the people who have this capability are not any open-source advocates or geeky teenagers wanting bragging rights, there's a good chance that they are blackhats, which means that once they have the IP address, mayhem will ensue.
Not good news in any case.