It is the same problem with a lot of the AI tools right now. Using them for your code, looking at your documents, etc etc. Unless you self host it or use a 'private' service from Azure or AWS (which they say is safe...) who knows where this information is ending up.
This is a major leak waiting to happen. It scares me to think what kind of data has been fed into ChatGPT or some code tool that is just sitting somewhere in a log or something plaintext that could be found later.