confidentiality

n.	1.	the state or attribute of being secret; privacy; as, you must respect the confidentiality of your client's communications.
	2.	discretion in keeping secret information.

Noun	1.	confidentiality - the state of being secret; "you must respect the confidentiality of your client's communications"
	2.	confidentiality - discretion in keeping secret information

concealment, privacy, privateness, secrecy