>I think it's because it's vanishingly rare that someone actually wants to see the world burn to the extent that they're willing to spend years of personal effort to that end to enact a plan that will kill them and everyone they know and love.
The point is that's what has kept us safe so far. But when the complexity of bioterrorism gets to the level of script kiddies, there's plenty of people that are intelligent enough and driven to do it with nothing to lose. The difference with nuclear or chemical attacks is that those both require massive industrial capacity and complex delivery mechanisms. Think of the mayhem when a single hacker can modify a flu virus to infect the entire world.
The point is that's what has kept us safe so far. But when the complexity of bioterrorism gets to the level of script kiddies, there's plenty of people that are intelligent enough and driven to do it with nothing to lose. The difference with nuclear or chemical attacks is that those both require massive industrial capacity and complex delivery mechanisms. Think of the mayhem when a single hacker can modify a flu virus to infect the entire world.