I work for a large Defense Contractor and we require closed and closely monitored media. Much of the data we use comes to us on Blu-Ray discs that are scanned/finalized and approved to be in a classified space. We just received word from our Program Security that there is some sort of vulnerability where Blu-Ray discs cannot be closed/finalized, so we are to put a hard-stop on using them. Does anyone have information on this? I haven't been able to find anything...yet.
The Advanced Access Content System (AACS) is a standard for content distribution and digital ... On Blu-ray discs, the Volume ID is stored in the BD-ROM Mark. ... On 5 June 2009, the licensing agreements for AACS were finalized, which were ... The AACS key extractions highlight the inherent weakness in any DRM system
The fact they CAN'T be finalized is what makes them rewritable! I found a great article here on dealing with "unfinalized vs closing" disks.