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Copilot does not delete prompts; in fact, Copilot interactions are stored within a hidden folder in the user's Exchange mailbox. In addition, retention policies and eDiscovery search can be used against them. See https://learn.microsoft.com/en-us/purview/retention-policies-copilot for more info.
Thank you ScottSchnoll very helpful link. Thus the LLM actually is learning from the old prompts or is this hidden folder preventing it from learning? In other words how does MSFT guarantee that the LLM is not using company sensitive data which is included in the prompts?
- LLMs don't learn any more. They are pre-trained, and the learnings from that pre-training are then applied to different data sets (like Microsoft 365 data). LLMs only access company data that a user has access to, and only when a user asks it to. The use of the hidden folder is the same approach taken for Teams chat messages for security and compliance reasons. Also, for convenience, prompt history in M365 chat is shown to users (although they can be deleted from the user's view if the user wants). If you are a user that has access to sensitive data and Copilot, then you can use Copilot with that sensitive data.