My advice would be to assume that you are already compromised or that nobody cares about the terabytes you have or that a well motivated adversary will be suffi

My advice would be to assume that you are already compromised or that nobody cares about the terabytes you have or that a well motivated adversary will be sufficiently resourced to circumvent whatever you do. But the caveat I have no knowledge whether your concerns are practical or theoretical. No knowledge of what is actually at stake. Is it state secrets, a few billion BTC, or cat photos.