Send Basic Security Headers
Adds common HTTP security headers to front-end responses: nosniff, same-origin framing, a strict referrer policy and a restrictive permissions policy.
WPIDE Team 6 installs
Snippet Library
Security snippets for WordPress
Snippets that harden WordPress: turn off XML-RPC, hide the version number, stop user enumeration, add security headers and block risky uploads. Small, reviewable changes for site owners who want fewer attack points without a heavy security plugin.
Block TRACE, TRACK and Other Unusual HTTP Methods
Answers requests that use HTTP methods WordPress never needs (such as TRACE, TRACK, CONNECT or DEBUG) with a 405 error before any page is built.
Enable HTTP Strict Transport Security (HSTS)
Tells browsers to always use HTTPS for your domain for one year. Only enable it once the whole site, including subdomains you use, works over HTTPS.
Redirect All Traffic to HTTPS
Permanently redirects every plain HTTP request to the HTTPS version of the same URL, for sites whose host does not do it already.
Reject Requests for Unknown Host Names
Returns an error for requests whose Host header is not your site's domain, which blocks host header injection tricks (such as poisoned password reset links) and junk traffic aimed at your server's IP.