Block username enumeration in WordPress

# The first step in hacking a WordPress site is to scan for low-number IDs, this is because
# a typical Superadmin is user #1 and users 2-10 contain additional high-value accounts.
# This small script effectively blocks user ennumeration, making WP much more secure.
<IfModule mod_rewrite.c>
	RewriteEngine On
	RewriteBase /
	RewriteCond %{QUERY_STRING} (author=\d+) [NC]
	RewriteRule .* - [F]
</IfModule>
# END block author scans