One US judge ruled that the FBI, to use in court evidence obtained by cracking a computer, must show the malware code to the defense. The effect was that the FBI abandoned use of that evidence.

This makes legal sense, but I suspect the FBI will resort to lying instead: using the evidence obtained by cracking to find other evidence, then making up a false explanation of how that other evidence was found. That is illegal, as I understand it, but hard to detect.