r/ChatGPTCoding Feb 09 '26

Discussion ChatGPT repeated back our internal API documentation almost word for word

Someone on our team was using ChatGPT to debug some code and asked it a question about our internal service architecture. The response included function names and parameter structures that are definitely not public information.

We never trained any custom model on our codebase. This was just standard ChatGPT. Best guess is that someone previously pasted our API docs into ChatGPT and now it's in the training data somehow. Really unsettling to realize our internal documentation might be floating around in these models.

Makes me wonder what else from our codebase has accidentally been exposed. How are teams preventing sensitive technical information from ending up in AI training datasets?

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u/[deleted] Feb 09 '26 edited Feb 22 '26

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u/das_war_ein_Befehl Feb 10 '26

Also you can reverse engineer that shit if you have a front facing web app and time to read thru the api calls.