HardenedPHP, an exclusive feature of CloudLinux OS that helps hosting providers secure old and unsupported versions of PHP. In those old versions, including widely used 5.2, 5.3, and, as of yesterday, September 15th, 2015 also 5.4, vulnerabilities, even if discovered, are not patched by the PHP.net community. CloudLinux OS HardenedPHP patches all PHP versions against known vulnerabilities. Over 100 vulnerabilities, of which many were critical, have been discovered for the unsupported versions of PHP and all have been patched by CloudLinux.