Ken Thompson's "Trusting Trust" compiler Trojan attack is not just a thought experiment. In fact, it was actually what he really did in real life. In a 1995 mail, he said he was able to successfully compromise the Unix Support Group at Bell Labs.

I first learned this Unix computer folklore at an free software meetup, and later shared it online. I was immediately corrected by someone, saying it's just a myth. I went to read the original paper and it seemed to be the case. there's actually more into this. The folklore is basically true.

@niconiconi I'd love to read the paper, do you have a link to share it?
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