Alert When wp-config.php, .htaccess or Root Files Change
Checks your site's root folder once a day and emails the administrator when wp-config.php, .htaccess, .user.ini or php.ini change, or when new PHP files appear next to WordPress's own files.
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 PHP Execution in the Uploads Folder (Apache)
Adds Tools > Uploads Protection with a button that writes .htaccess rules to your uploads folder so PHP files there can never be run, even if one slips through an upload.