The killer’s signature wasn’t on the weapon, it was in the code.

The killer’s signature wasn’t on the weapon, it was in the code. In the Bull episode “E.J.”, a self-driving car kills a man. The world blames the AI… until the team digs deeper. Turns out, someone had slipped in a backdoor, lines of hidden logic that influence the AI. When the truth surfaces, it’s because the CEO notices, “Carter’s coding signature was all over it.” That’s how they find the real culprit, not through sensors or data logs, but through human fingerprints inside machine logic. Fast-forward to today. Everyone, from students to professionals, even curious hobbyists, are now writing code with AI. Lines are suggested, completed, or even fully written by a model trained on someone else’s work. And while that’s powerful, it also means something else: attackers use the same models. They generate malicious code that look harmless but hides intent deep inside. No clear style. No signature. Just machine-written precision masking human purpose. If E.J. were real today, would we even