Add the Secure DNS feature (as seen in Opera and Chrome) to the desktop and mobile versions of the browser. The feature made use of DNS-over-HTTPS to encrypt a step known as 'DNS (Domain Name System) lookup' to ensure a safer and more private browsing experience for users. Add the Secure DNS feature (as seen in Opera browser) to the desktop and mobile version of the browser. The feature use DNS-over-HTTPS to encrypt a step known as 'DNS (Domain Name System) lookup' to ensure a safer and more private browsing experience for users.