The term confidentiality is used to describe the act of keeping information in confidence. The information may be sensitive or personal and is protected against disclosure to unauthorized persons or organizations.
Confidentiality can be breached by inappropriate actions such as theft, loss, unauthorized disclosure or access (intentional or not), and copying. Confidentiality is a cornerstone principle of information security based on the assumption that all data should be protected against unauthorized disclosure.
Data privacy is the right of individuals to decide how their personal data will be collected and used. Data privacy laws govern how companies use your personal data in order to protect your right to privacy, including how they collect, store and use it in a variety of ways.