Although both HD-DVD and Blu-ray have already been hacked to get around copy protection measures, a Doom9 forum poster has managed to find the most effective method yet. Until now, each different film has needed its own unique key to decrypt it, but now all you need is a single Processing Key, which works on both high definition formats. The method used by the hacker was to record all the information that was being read from the disk into the memory and therefore managed to find the processing key. This Processing Key will probably stop working soon however - once the Advanced Access Content System Licensing Administrator gets word of it future disks are likely to be updated.