Confidentiality
Confidentiality involves a set of rules or a promise usually executed through confidentiality agreements that limits the access to or places restrictions on distribution of certain types of information.
en-GB/ˌkɒnfɪˌdɛnʃɪˈælɪtɪ/
en-US/ˌkɑnfəˌdɛnʃiˈæləti/