The threat landscape is dramatically different than it was just 5 years ago. A traditional web application firewall (WAF) was once a very effective solution for mitigating application layer attacks, but now has trouble keeping up with the advanced capabilities and agility of attackers. Signatures often lag behind new exploits. Even when a traditional WAF is capable of mitigating the threat, implementing and managing it properly can be a challenge. Today, new methods are needed to effectively automate the mitigation of fast-evolving threats.