With the news of Superfish, Komodia and PrivDog , there has been some interesting discussion on private trust and HTTPS proxies. Private Trust By private trust, I mean the use of private certification authorities (CAs). On the Internet, we use public trust CAs. These CAs are created in accordance with browser certificate policies, are highly secured and are audited on an annual basis to confirm they meet their compliance requirements. Private trust CAs have no security requirements to meet but their own.