Don't take this as combative, but that sounds like nothing more than a science fiction plot. Putting arguments for how close we are or aren't to AGI aside; the

Don't take this as combative, but that sounds like nothing more than a science fiction plot. Putting arguments for how close we are or aren't to AGI aside; there's no way you could spend the amount of money it would take to train such a basilisk on company resources without anyone noticing. We are not talking about a rogue engineer running a few cryptominers in the server room, here.