Email Security Protocol Assessment

The Email Security Protocol Assessment provides CISOs, messaging architects, and IT security managers with a structured maturity audit for enterprise email infrastructure. It evaluates inbound threat defenses, outbound data leakage prevention, authentication enforcement, and secure communication protocols.

The assessment evaluates critical architectural capabilities including Secure Email Gateway (SEG) sandboxing, Content Disarm and Reconstruction (CDR), time-of-click URL rewriting, outbound DLP filtering for PII/PHI, and S/MIME or PGP message encryption.

For decades, enterprise email security relied exclusively on MX-based Secure Email Gateways (SEGs). An organization pointed its MX records to the SEG, which inspected messages before relaying them to on-premises Microsoft Exchange servers. While effective against high-volume bulk spam and known signature-based malware, SEGs struggle with modern text-based social engineering, legitimate compromised account attacks, and internal-to-internal email threats.

Modern architectures supplement or replace SEGs with Integrated Cloud Email Security (ICES) solutions. Connected directly via cloud API (such as Microsoft Graph API or Google Workspace APIs), ICES solutions analyze email within the mailbox using Natural Language Processing (NLP) and behavioral AI. This enables continuous post-delivery remediation, retrospective clawback of malicious messages, and deep inspection of internal employee-to-employee communications without altering public DNS MX routing.