Subresource Integrity for Scripts and Styles From CDNs
Adds integrity and crossorigin attributes to the CDN-hosted scripts and stylesheets you list, so browsers refuse to run them if the CDN copy is ever tampered with.
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.