HTTPS adoption
According to the August 2017 Qualys survey (see https://www.ssllabs.com/ssl-pulse/), 60.2% of the sites they analyzed had proper SSL configuration. It is important to note that their survey is limited to 138, 672 of the most popular websites, a small sampling of the hundreds of millions of sites currently available online.
The HTTP Archive reports 64% of the top 500,000 websites use HTTPS (https://httparchive.org/reports/state-of-the-web#pctHttps) shown in the graph. The good news is both surveys show a positive trend toward more sites using SSL:
Unlike the past, every website should now use HTTPS instead of plain text HTTP. Securing your website via HTTPS is about more than security—it is about building trust. When you implement HTTPS, you not only add a layer of security: Your customers can see that dedication to security and feel more comfortable about doing business with your brand. Most consumers and non technologists get the purpose of HTTPS. They don't care about the technical implementation, they care about the trust. When you implement HTTPS, you are eliminating a layer of stress that your customer might have if you didn't use HTTPS. SSL adds value to your overall user experience, and that is why search engines and browsers are pushing everyone toward HTTPS everywhere. There are several reasons why you should use HTTPS with every website.