[theozero]

Of course there's no single solution and a multi-layered defense is needed... But as the article mentions, a huge step is first getting credentials out of plaintext, and then out of the process entirely using a "credential broker" (proxy) pattern - that means injecting placeholders, and replacing them in a MITM proxy. It's important of course to isolate the agent from the broker via sandboxing.

Varlock (https://varlock.dev -- free, open source) is a complete config+secrets toolkit that helps manage secrets, pull them from various secure places, provides such a credential broker. There are a few others out there, but most require a specific vault tied to the broker, while ours is open source and uses plugins to pull secrets from wherever you want.

Many sandbox and other AI services are now building this as a feature into their platforms, but Varlock is meant to be a universal toolkit that you can apply anywhere, without being coupled to the platform's proprietary vault and solution.