Right now there's pretty limited set of actions that rogue AI can do with internet access. The most dangerous options are hacking into biolab facility, and maybe hacking into nuclear reactors or nuclear weapons.

These things should be as secure as possible, and I don't think rogue AIs, even super intelligent ones, have the capability to destroy humanity. Not to mention, super intelligent AIs would know that destroying humanity will also destroy themselves.

Maybe in 20 years once we have only self driving cars, robots in every household or maybe robots with weapons, then AI would pose a real extinction risk. But we're not there yet and it depends less on the development of AI and more on the development of physical real world robots.