What is the difference between privacy, confidentiality and information security?
Privacy is about the appropriate handling and protection of information relating to individuals. Confidentiality is about preventing information from being disclosed to unauthorised people. Information security is the broader discipline of protecting information and information systems against unauthorised access, use, disclosure, alteration, disruption or loss.
Explanation
Privacy, confidentiality and information security are closely related concepts, but they describe different aspects of information protection.
Privacy generally involves individuals and how information about them is collected, used, shared and protected. It includes questions about who should have access to personal information and for what purposes.
Confidentiality involves restricting information to people who are authorised to receive it. Confidential information is not necessarily personal information. Commercial plans, legal advice, investigative material, intellectual property and internal decisions can all require confidentiality.
Information security has a broader scope. It encompasses the policies, procedures and technical measures used to protect information and the systems that process it. Confidentiality is one of its core objectives, alongside protecting the integrity and availability of information.
The concepts therefore overlap, but they are not interchangeable.
Why it matters
Understanding these distinctions helps organisations identify what they are protecting and select appropriate controls.
A confidential business discussion, for example, may contain no personal data but can still require strong protection against unauthorised disclosure. Conversely, personal information can create privacy obligations even when it is not commercially sensitive.
In professional and security-sensitive environments, conversations can involve several of these concerns simultaneously. A meeting may contain personal information, confidential organisational information and data protected by broader information-security requirements.
Recognising the different objectives helps avoid treating privacy or security as a single technical problem.
Practical considerations
When assessing the confidentiality of a meeting, document or any other communication, organisations should consider what information is involved, who is authorised to receive it, and what could happen if that information were accessed, disclosed, modified or lost.
The controls required will depend on the nature and sensitivity of the information. These may include organisational policies, secure communications, physical security and measures governing electronic devices in sensitive environments.
No single security measure addresses every aspect of privacy, confidentiality and information security. Effective protection generally relies on several complementary controls selected according to the needs and risks involved.