Email security remains a key productivity tool for today's organizations, as well as a successful attack vector for cyber criminals. According to the Verizon 2019 Data Breach Investigations Report, 94% of malware was delivered via malicious emails. Gartner asserts that "advanced threats (such as ransomware and business email compromise) are easily bypassing the signature-based and reputation-based prevention mechanisms that a secure email gateway (SEG) has traditionally used.