Would a general person in your situation know that it's doing criminal things? If not, then you're not on the hook - the person who wrote the secret code is.

You can't sit back and go "lalalala" to some tool (AI, photo software, whatever) doing illegal things when you know about it. But you also aren't on the hook for someone else's secret actions that are unreasonable for you to know about.

IANAL.

IAAL (not legal advice) and your conclusion is generally correct. "Willful disregard" frequently nullifies potential defenses to liability.