add_filter( 'wp-hide/mod_rewrite_rules', '__mod_rewrite_rules', 10, 2 );
    function __mod_rewrite_rules( $rules, $type )
        {
            if  ( $type !=  'apache' )
                return $rules;

            $rules  .=   "\n\n" . 'RewriteCond %{HTTP_USER_AGENT}  ^.*sitechecker.*$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT}  ^.*whatcms.*$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT}  ^.*wpthemedetector.*$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT}  ^.*wappalyzer.*$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT}  ^.*wpdetector.*$ [NC,OR]
RewriteCond %{HTTP_USER_AGENT}  ^.*isitwp.*$ [NC]
RewriteRule .* - [F,L]' . "\n";

            return $rules;

        }