This is because to build a pipe bomb you need difficult to source materials. This is not the case for other types of threats (cyber / bio).
I personally have no need for an LLM which will readily explain how to cut up the genotype of smallpox into small chunks which can pass the screening at the bio-labs, and can be readily assembled into the real thing by a second year lab-student.
Anyone who knows how to operate a biolab properly will already know how to do such things. This is not really an in your basement thing. Dangerous chemistry is much more of a risk.
Ignorant question but won’t there be much smarter teams if people using LLMs to workout how to mitigate these threats. It seems like more of a problem if only a few people have access.
It seems like there would be a massive attacker bias in multiple ways. Defenders need consent, attacker does not. Defenders have to work with the human body, attackers only have to break it. Defenders have to stick to the law, which may prevent them from releasing anything at all, attackers do not. And so on. I would not surprised if the attacker's task is a hundred times easier here.