Non-disclosure agreement, types, parts, limitations, enforcement, etc. Also learn what to do if you need to sign or create an NDA.Intheblanks form authorizing a filing agent to efile documents on behalf of an individual attorney. An NDA is alternately called a confidentiality agreement (CDA), proprietary information agreement. (PIA), secrecy agreement, or other similar term. Under NO CERCUMSTANCES can an NDA prevent you from disclosing a crime. The contract is not legal in that case and the NDA is dismissed. Queen's University has created a series of templates for Confidentiality and Non-Disclosure Agreements (CNDAs). An NDA is a legal document that protects your business information and trade secrets from vendors, employees, and third parties. At Lipsky Lowe LLP, our employment attorneys have an in-depth understanding of confidentiality and non-disclosure agreements.