The trouble with DRM

Cory Doctorow's brilliant denunciation of DRM, as delivered at a Google Author talk a couple years ago:

If you deliver to an attacker the cipher-text, the cipher, and
the key, and rely on the attacker not combining those except
under circumstances you dictate, you're living in a fool's paradise.

I was reminded of this by Roger Gregory, who directed me to a youtube video about cold-boot attacks.