alt Hacker NewsI would guess this part - since it's so sensitive, and fairly small - was either written or heavily driven by humans. Though I do also think it's possible their internal Mythos ~5.5 or whatever may also not necessarily be heavily optimized for thinking in the right manner for highly effective underhanded code. (I think it's possible it is capable and they just didn't use it for this, for whatever reason, though.)
Issue is if all their human software engineers have been vibe coding everything all the time (which apparently they are according to Boris), then they will be getting stupider and worse at writing code over time from lack of practice.
By this point they're probably pretty bad at writing code