This was a great year for adoption of HTTPS encryption for secure connections to websites.
HTTPS is an essential technology for security and privacy on the Web, and we've long been asking sites to turn it on to protect their users from spying (and from censorship and tampering with site content). This year, lots of factors came together to make it happen, including ongoing news about surveillance, advances in Web server capacity, nudges from industry, government, and Web browsers, and the Let's Encrypt certificate authority.
By some measures, more than half of page loads in Firefox and in Chrome are now secured with HTTPS—the first time this has ever happened in the Web's history. That's right: for the first time ever, most pages viewed on the Web were encrypted! (As another year-in-review post will discuss, browsers are also experimenting with and rolling out stronger encryption technologies to better protect those connections.)