[jerf]

"Despite its incredibly intelligence what I found more unrealistic was its control of all internet-connected systems in the US (traffic, remote control drones, phones, different OS, etc) "just because I am an AI and I can do whatever I want""

On the other hand, "Mirai botnet". Even the "mere humans" are doing pretty darned good laying hands on vast powers in the current environment.

The hard-to-believe part is an AI that is much smarter than human. Once you have that, I have no problem swallowing that it could pretty much hack whatever it wanted in our current world as long as it could get a connection. That's not because I believe in magical hacking powers, it's because we demonstrably don't really care much about security and we get exactly the systems you'd expect as a result. My local red team [1] seems to be able to get past pretty much anything it wants to and they're not superhuman AIs.

An AI that operated in a world where all programming languages were memory-safe would at least have a harder time of things. Though between things like Rowhammer and much higher-level hacking (social engineering, for instance), I suspect it would still not face much challenge.

[1]: https://en.wikipedia.org/wiki/Red_team