Google has issued a new transparency report which details how much Chrome traffic is encrypted across different platforms. Some highlights from the data are that 64% of Chrome traffic on Android is now using HTTPS encryption compared to 42% a year ago, over 75% of Chrome traffic on ChromeOS and the Mac is now protected - that’s up from 67% and 60% respectively, and that 71 of the top 100 sites on the web now use HTTPS by default, up from 37 a year ago.
One of the major drivers of HTTPS traffic is the Let’s Encrypt platform. Google said that Chrome would remain a Platinum sponsor of Let’s Encrypt in 2017, and that it has committed to continue its support next year. In June, Let’s Encrypt reported that it had issued 100 million certificates since its inception.
Google previously announced that managed SSL for Google App Engine would be introduced, which secures entire top-level Google domains such as .foo and .dev by default with HTTP Strict Transport Security (HSTS); these advances make HTTPS automatic and painless.
Of all the platforms on which Chrome runs, Android is still in last place in terms of the percentage of HTTPS browsing, however, it is showing the most growth among all of the different operating environments.