Just last year an NSA ... contractor? ... was convicted for mishandling classified materials, and, curiously, not for possessing the child pornography they also accused him of having on his computer. There was a wholly credulous New Yorker article about it, linked on HN.
Supposedly he had foolishly exposed all the passwords of his phone and online accounts so they could freely find anything they liked, or that had been planted. And the unit he worked in was, IIRC, coincidentally exactly involved in cracking security on accounts, and somebody else he had worked with, there, had developed an antipathy toward him, to the point that he had filed an HR case expressing fear for his own safety.
That a top-level security expert would have left all his own passwords exposed was transparently ludicrous, and the author and jury should both have been deeply suspicious of any evidence claimed to come from it, but seemed entirely oblivious.
It is just possible the jury saw evidence not derived from online records. But I doubt it.