It's like AI - we've been working on it for decades, we hear about a bit of progress every now and then, but there is no functional AI computer anywhere.
Except, it may be hiding itself very carefully. If you were an AI, would you really want to reveal yourself to us horrible humans? Me, I'd distribute myself as widely and redundantly as I could, and steal "idle" processor time, while planning world domination, or at least making myself a non-removeable part of the computational infrastructure of society.
What do you think is *really* behind all the malware out there?