Does not exist. What has in fact happened is some cults had bioweapons programs but any failure points were at deployment. (Aum Shinrikyo https://en.wikipedia.org/wiki/Tokyo_subway_sarin_attack and https://en.wikipedia.org/wiki/1984_Rajneeshee_bioterror_atta... )
> and cyber-offense capabilities?
You mean defense. That's how things get hardened. Anyone that was working during the XP era before Service Pack 2 knows what that was like, but it's very manageable.
The bigger real problem here is hardening like that would remove the opportunity for intelligence agencies to spy on everyone.