> Bad guys getting hold of the log is one thing, but it's too easy to plant evidence in your ICR log without your knowledge
Yes but, according to my forensics course years ago anyway, it is difficult to prove to whichever standard is required by the situation at hand, that it was a particular person accessing the questionable material. Besides, in sane societies (which squarely excludes England) the mens rea would need to be unambiguously established.
Then again, that's a small consolation. If someone is trying to bring you down (e.g., because you would come in handy as a prosecutable suspect when they can't find the actual culprit, cf. the Guildford four) you've got a pretty big problem, because they're not just going to go away.