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.

As mentioned by another commenter, the real danger is that these tools act as amplifiers and enablers for human agents that want to do really bad things. Whereas some crazy group that wants to destroy X for some reason, but had no ability to do so before, with the help of advanced AI tools might have a chance.

The other is the human deploying these things don't even need to be bad (evil) actors. They can just be really dumb and/or lazy in how they use them and then inadvertently cause huge amounts of real damage.

As Margaret Atwood pointed out "Stupidity is the same as evil if you judge by the results"

The easy way would simply be to air gap them. The controls should be on site only.