You are responsible for network and information security at a metropolitan police station. The most important concern is that unauthorized parties are not able to access dat

'What is this called?' is a question, not a security principle or concern.

Confidentiality is the assurance that information is not disclosed to unauthorized individuals, entities, or processes. In a police station setting, preventing unauthorized parties from accessing sensitive data like suspect information or ongoing investigation details is a paramount concern, directly aligning with the definition of confidentiality.

'Encryption' is a method used to achieve confidentiality, but it is not the security principle itself.

'Integrity' ensures that data has not been altered or destroyed in an unauthorized manner, which is different from preventing unauthorized access.

'Availability' ensures that authorized users can access information and systems when needed, which is a different security objective than preventing unauthorized access.