alt Hacker NewsYou should assume any of those are possible. And by that I mean: it's not physically possible to "control the technology" without instituting total surveillance and even that's just false security.
Defense is the only way.
You don't realize it, I imagine, but you're essentially advocating for the contemporary equivalent of requiring a license to print text on paper and distribute it.
We are not helpless. We can choose to control the technology and do so in a way that is in line with democratic principles. After Hiroshima, people assumed that most nations would develop nuclear weapons and that nuclear war would be commonplace. But Nagasaki was the last nuclear attack, and 80 years on, only a dozen nations have nukes. This technology makes nuclear weapons look like toys. We either choose to control it or we will be the victims of it.