Finding the people who have it and punishing them is probably more expensive than finding the originator, when both are doable. It's not obvious to me how they

Finding the people who have it and punishing them is probably more expensive than finding the originator, when both are doable. It's not obvious to me how they would find the jokes on the hard drives unless everything was compromised. Encrypted drives with plausible deniability seems like it would also help?