Allow XML-RPC Only From Trusted IP Addresses
Keeps XML-RPC available for the services you list (such as Jetpack or a publishing app on your office network) while answering every other XML-RPC request with a 403 error.
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.