Email security is a collection of processes and technologies that protect email accounts, users, and organizations from unauthorized access and malicious messages. Email is the most common attack vector for cybercriminals, making robust email security essential for every organization.
A robust email security program has two main components
Processes: Security practices such as security awareness training, access management, email archiving, password standards, and incident response procedures that establish organizational security culture and governance.
Technologies: Solutions including secure email gateways (SEGs), built-in cloud provider protection (such as Microsoft Defender for Office 365 and Google Workspace protections), integrated cloud email security (ICES), and email data safeguards that provide automated threat detection and prevention.
Email security must defend against a wide range of threats including
Phishing and spear phishing attacks
Business email compromise (BEC)
Malware and ransomware delivery via attachments or links
Account takeover attempts
Spam and graymail
Email spoofing and domain impersonation
Social engineering attacks
Modern email threats have evolved beyond what traditional signature-based and rule-based systems can detect. Sophisticated attacks use legitimate email infrastructure, avoid malicious links or attachments, and exploit trust through impersonation. AI-powered solutions like Pangratis use behavioral analysis and machine learning to detect these advanced threats by understanding what normal communication looks like and flagging anomalies.
Best practices for email security include implementing SPF, DKIM, and DMARC authentication protocols, enabling multi-factor authentication, training employees to recognize threats, and layering multiple security technologies for defense in depth.