Non-disclosure is failure to inform an underwriter or insurer of all the facts relating to a life or health insurance proposal. An order of nondisclosure is a court order prohibiting public entities such as courts and police departments from disclosing certain criminal records.This article provides general information about nondisclosure orders in Texas, including the different types. It lists the nondisclosure order statutes. An NDA is a legal agreement which defines information that the parties wish to protect from dissemination and outlines restrictions on use. Non disclosure agreement is a contract between two or more parties that establishes confidentiality. NDAs, or non-disclosure agreements, are legally enforceable contracts that create a confidential relationship between a person who has sensitive information. A NonDisclosure Agreement (NDA) is a binding contract that requires all signing parties to keep specific information confidential. They allow the parties to share sensitive information without fear that it will end up in the hands of competitors. 1. Confidential Information.