In the interim, theyve been able to decrypt. HD-DVD movies will hit the shelves that wont play on some players, the first countermeasure by the content and software industries to combat intensive efforts by. The move comes four months after hackers first poked a. hole in. Advanced Access Content System (AACS), the complex encryption. security gap will be closed, at least for some time, with the new discs. But earlier this month, hackers scored another success in.”]