Security & SSL
Certificates, HTTPS, and keeping your site locked down.
SSL certificates are issued and renewed automatically for domains pointed at Traxio, so for most people this section is about confirming it worked and forcing traffic to use it. The articles here cover enabling SSL, redirecting HTTP to HTTPS, and the basic security practices that prevent the majority of site compromises.
The single highest-value habit is keeping WordPress core, themes and plugins updated. Outdated plugins account for the overwhelming majority of hacked shared-hosting sites, far ahead of anything involving the server itself. Website Security Basics covers the rest in more depth.