You might notice a neat little lock icon in the upper left of the URL bar, courtesy of Let's Encrypt, a non-profit organization that hands out encryption certificates for websites. You just have to install open-source software on the server, which proves you are the owner of a website, and you can automatically get a certificate.
It was super quick and easy to set up. Here's the guide I used.
I remember back in the bad old days you had to pay companies like VeriSign thousands of dollars a year to get these certificates. Thanks to Let's Encrypt for making this essential privacy technology available to everyone!