Easy-peasy. Just require all software to be cryptographically signed, with a trusted chain that leads to a government-vetted author, and make that author responsible for the wrongdoings of that software's users.

We're most of the way there with "our" locked-down, walled-garden pocket supercomputers. Just extend that breadth and bring it to the rest of computing using the force of law.

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Can I hear someone saying something like "That will never work!"?

Perhaps we should meditate upon that before we leap into any new age of regulation.