What if we can't trust *ANY* if you have the source code? A perfect, self-replicating "sin" passed down for generations of compilers. Invisibly compromised in every program. It sounds like a spy novel; only it actually happened. Ken Thompson, creator of UNIX, theorized how Code Auditing won't save you. This is how it why it's already in the wild. --- Timestamps: 00:00 Original Sin 02:06 Compiler Family Tree 05:44 Self Reproducing Code 10:42 Obfuscating the Quine 13:24 C touches EVERYTHING 17:43 A Mitigation (sorta) --- Check out my X account for cool Computer Science stuff! --- Reflections on Trusting Trust, Ken Thompson: David Wheeler's Diverse Double Compiling Mitigation: