I would add that I'd be worried that if we weren't one step ahead, the discover of such digital forensics counter-measures would be used as evidence of wrong-do

I would add that I'd be worried that if we weren't one step ahead, the discover of such digital forensics counter-measures would be used as evidence of wrong-doing. RIPA (Regulation of Investigatory Powers Act, 2000) has set a precedent where the unwillingness to acquiesce (for example, divulge encryption keys) is a crime in and of itself, effectively outlawing privacy.