Cloudflare is implementing a feature that encrypts your Server Name Indication (SNI). The new technology will be called ESNI.
But, today, as HTTPS covers nearly 80% of all web traffic, the fact that SNI leaks every site you go to online to your ISP and anyone else listening on the line has become a glaring privacy hole. Knowing what sites you visit can build a very accurate picture of who you are, creating both privacy and security risks.
This is a big change. Basically it will stop ISPs, rogue apps, and advertising companies from collecting and selling your browsing history. ESNI will hide the identities of the websites you visit.






