Mencegah Pencurian Bandwidth dengan htaccess

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http://(www\.)?riaumandiri.co.id/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://(forum\.)?riaumandiri.co.id/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://(blog\.)?riaumandiri.co.id/.*$ [NC]
RewriteRule \.(gifjpgjscss)$ - [F]