A Non-Disclosure Agreement (NDA) is a legally enforceable contract that establishes confidentiality between two parties—the owner of protected information and the recipient of that information. By signing an NDA, participants agree to protect confidential information shared with them by the other party. In addition to not divulging or releasing the information without consent, the recipient also agrees not to copy, modify, or make use of the information in any way that is not authorized by the owner.