Ideas submitted should contain only public information. The challenge is open for anyone to view, so each team needs to protect its own IP until they get to a stage where it makes sense to sign non-disclosure agreements.
There is no need to include any proprietary or confidential information -- even in the private upload fields. You will only be evaluated based on the public fields, so please submit only a high-level overview.
Once under contract, USAF will comply with all local, state, federal, and international privacy laws. Privacy and security will be critical.