Confidential information clause samples (d) to keep confidential and not reveal to any person, firm or company (other than Representatives) Protect confidential information from exposure.Non-disclosure agreements are legal contracts that prohibit someone from sharing information deemed confidential. We take an indepth look at email disclaimers and show you when you need them and how to create a good one for your business. This confidentiality letter outlines the terms for sharing confidential information between two parties negotiating the potential acquisition of a business.