Data privacy is the protection of personal or sensitive information from being collected, shared, or kept when it is not necessary. It concerns what data an organization gathers, who can access it, how it is used, and how long it is retained. Privacy matters in cyber security because excessive or poorly controlled data can expose people to identity theft, fraud, or unwanted disclosure if systems are misused or breached.
In practice, privacy risks can arise when someone submits essays, research notes, or personal details to a third-party AI service. The service’s settings and policies determine how submitted data may be stored or used. Defenses include limiting the information shared, reviewing retention and access settings, using approved services, and deleting data when it is no longer needed. Organizations should also set clear rules for handling sensitive information and verify that providers protect it appropriately.