This is also happening right now with ICE combing through the various federal databases that they previously didn't have access to.

But the worst thing is that the sheer amounts of compute available to even fairly small organizations, never mind governments, means that it's so easy to data mine stuff like that. And now there's AI to do the same with unstructured data. And meanwhile our corporate overlords are happy to profit from it: https://news.ycombinator.com/item?id=46349281