> Runaway self-improvement?

It doesn't do that at all.

>Strategies to acquire and deploy chemical weapons?
>
>how to make several types of bombs

That is all readily available on the regular internet, without AI.

>as it can code, probably can be used to ask for implementations of malware

No, it's really not that good. It can only make little snippets of code and they are often wrong or poorly optimized. It's very cool, but anyone with an undergrad degree in CS can do better than ChatGPT. It is not going to make malware any more approachable than it was before.