"Only a few days after Corel issued a WinDVD update to close the hole opened by AACS hackers, the folks at the Doom9 forums sent word that they have found yet another way around the copy protection for high definition discs. This time, the method involved the Xbox 360's HD DVD add-on drive to capture the "Volume Unique Keys" as they were being read by the drive itself. Rather than just point out the crack, we're going to take a closer look at how this crack was accomplished, because one of the hackers involved in the crack says that it's more or less unstoppable." See http://arstechnica.com/news.ars/post/20070415-aacs-cracks-cannot-be-revoked-says-hacker.html for full article. In short, they've managed to pull volume access keys out using a modified XBox 360 HD-DVD drive.