Which historical events are analogous to AI risk in some important ways? Possibilities include: nuclear weapons, climate change, recombinant DNA, nanotechnology, chloroflourocarbons, asteroids, cyberterrorism, Spanish flu, the 2008 financial crisis, and large wars.

Cryptography and cryptanalysis are obvious precursors of supposedly-dangerous tech within IT.

Looking at their story, we can plausibly expect governments to attempt to delay the development of "weaponizable" technology by others.

These days, cryptography facilitates international trade. It seems like a mostly-positive force overall.