Let’s Encrypt has distributed 1 million free digital certificates in just three months. The certificates cover 2.5 million domains, most of which had never implemented SSL/TLS. The organization is run by the ISRG (Internet Security Research Group) and is backed by Mozilla, Cisco, Akamai, Facebook and others. There’s been a push in recent years to encourage websites to use encryption on the Web. Google, Yahoo, and Facebook have all taken steps to secure their services.”]