A confidentiality or non-disclosure agreement (NDA) can be a difficult thing to deal with, but it doesn't have to be. California courts have long ruled that companies can use NDAs to protect certain financial, technical, and businessrelated information.An NDA is a contract that creates a confidential relationship between parties that need to share sensitive information. Use a non-disclosure agreement (NDA) to protect trade secrets or sensitive information from being revealed. Download an NDA template here. If the people with whom you do business receive or have access to your confidential business information, you may want them to sign an NDA. In the State and Federal Courts in Santa Clara County, California.