We constantly retrain our red flag models and they are tested for robustness (whichever way the company decides to express the existence of a risk, like say an investigation, we ensure that the models pick it up)

Companies are already doing this. IR consultants have, allegedly, been advising exec teams to use/not use certain words based on their impact on AI models. It is inevitable.

SEC filings are somewhat more robust because they are a standardized format but the point of many of these frauds, for example SinoForest, was about things which weren't in the document not the things that were (the stuff that was in documents was never a smoking gun...iirc, I remember looking at the stock before it happened...a lot of these Chinese frauds had totally fine numbers though, that was the point).