At the time that Anthropic unexpectedly implemented the US government's export control directive on its powerful AI model Fable, I was using it, trying to strengthen security for my vibe-coded apps one by one. With one sweep, Fable's usage was stopped for anyone who was not a US national.
Fable is a restricted version of Anthropic's powerful Mythos AI model, which has found security vulnerabilities in well-maintained software containing code that has been security-tested for as long as 16 yrs. These are called zero-day vulnerabilities: security loopholes and gaps that remain undiscovered, and can be used to launch attacks on software before they're identified and fixed. One well-known zero-day vulnerability was in WhatsApp when Pegasus used it to infiltrate devices couple of years ago, which was subsequently patched.
