Parliament's Privileges Committee has asked the Parliamentary Service to take its protocol on releasing information on MPs, and others such as journalists, back to the drawing board.
The committee met on Thursday to discuss the circumstances under which the service can release information.
It follows a report which was critical of the service for giving out information on email phone and swipe card records of United Future MP Peter Dunne and journalist Andrea Vance to the Henry Inquiry.
MPs told the Clerk of the House that unless someone agrees that information about them can be released, it should not be.
Committee chair Christopher Finlayson said that should apply to emails, even if one party involved consents to it, and didn't think journalists' movements around the place should be recorded at all.