Traditional email security identifies incoming threats based on known signatures to protect against malware, viruses and threats distributed via spam. But today, many email attacks are laser focused and evade traditional detection by adopting advanced techniques and targeting human nature. Adversaries mask payloads by standing up zero-day domains, research their targets, and often impersonate trusted parties to steal money and data. Email security engines based solely on signatures or metadata are no longer enough to protect businesses from these advanced attacks.