Palo Alto Networks today announced that its family of next-generation firewalls is the first and only to deliver data leak prevention (DLP) functionality in a network firewall. This new content security capability – offered at no additional cost to customers – enables enterprises to detect critical pieces of personally identifiable information, such as Social Security or credit card numbers, within application traffic. Based on easy to define policies, the firewall can then take automatic action – from alerting to blocking – to prevent inadvertent or intentional disclosure of sensitive data.