Confidentiality controls are policies and safeguards that prevent sensitive information from being accessed or disclosed by unauthorized people. They can include access permissions, encryption, data-loss prevention, and rules for handling records, as well as physical measures such as badge-controlled rooms and secure meeting practices.
These controls matter because information can be exposed through both digital and physical access. In practice, organizations use them to limit who can view files, protect data in transit or at rest, and reduce the risk of confidential conversations being overheard or recorded. Layered controls help contain exposure if one safeguard fails, while monitoring and review help identify gaps or misuse.