AI safety in and if itself isn't really relevant, and whether or not you could hook AI up to something important is just as relevant as whether you could hook /dev/urandom up to the same thing.
I think your security analogy is a false equivalence, much like the nuclear weapons analogy.
At the risk of repeating myself, AI is not dangerous because it can't, inherently, do anything dangerous. Show me a successful test of an AI bomb/weapon/whatever and I'll believe you. Until then, the normal ways we evaluate software systems safety (or neglect to do so) will do.