That's an interesting idea. I do think it would be nice to have some way of knowing "is this prompt coming from the operating system or some third-party app?".

That's an interesting idea. I do think it would be nice to have some way of knowing "is this prompt coming from the operating system or some third-party app?". However, I don't think it would have helped in the case of my vulnerability, because it abused a legitimate OS prompt.