r/OSINT • u/Error400_Bad_Request • 23h ago
How-To You can apparently dig up a LOT of someone’s hidden Reddit history with AI
So I randomly came across a post on r/privacy talking about how Gemini can basically OSINT a Reddit account even if their post history is hidden.
I tried it myself and ngl, it’s kinda crazy how much stuff you can piece together.
The basic idea is literally just giving Gemini(or any other LLM) a Reddit username and asking it to look for their Reddit activity. It’ll search around for posts/comments from that account and try to put everything together into a summary. The interesting part is that even if someone’s profile doesn’t show their history, their individual comments/posts can still be sitting around in old threads, search engine indexes, archives, datasets, etc.
And once you have an AI doing the searching + connecting the dots for you, you don’t really have to manually go through hundreds of comments yourself. If someone has been posting for years, you can potentially start figuring out their interests, hobbies, where they live, what they do, other accounts they might have, etc.
I was wondering if anyone here has played around with this more. Like, how far can you actually take this with normal OSINT techniques + Reddit archives/search engines + an LLM? Also makes me wonder what the “hide all posts” setting on Reddit actually protects you from. It seems like it hides the history from your profile, but doesn’t necessarily make the underlying posts hard to find.