We use a Non Disclosure Agreement for all Customers wishing to audit and Suppliers of our custom made components, I've attached a copy for your perusal. Confidentiality agreements are very useful to prevent unauthorized disclosures of information, but they have inherent limitations and risks.Such an agreement must provide, among other things, that the custodial bank will not make payment for the Securities until the bank actually. NDAs, or non-disclosure agreements, are legally enforceable contracts that create a confidential relationship between a person who has sensitive information.