Confidentiality (noun)

The state of being kept secret or private.

Origin:

From latin confidentialis, from confidere "to trust".

Examples:

1. The lawyer assured the client of confidentiality.
2. The company has a strict policy of confidentiality.
3. The patient's medical records are protected by confidentiality.
4. The therapist must maintain confidentiality in their sessions with patients.
5. The employee has to sign a confidentiality agreement before starting the job.