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TIL how crazy the "BD+" BluRay copy protection mechanism is. BluRay discs ship actual executable programs written for a custom virtual machine that can execute arbitrary code??!!

Also LOL:
"The copy protection scheme was to take "10 years" to crack, according to Richard Doherty, an analyst with Envisioneering Group".

Oct 2007: The first discs with BD+ encryption are released
March 2008: AnyDVD HD released, allowing the full decryption of BD+, allowing not only the viewing of the film itself but also playing and copying disks with third-party software.

https://en.wikipedia.org/wiki/BD%2B