Gartner defines an email security platform as a product that secures email infrastructure. Its primary purpose is the removal of malicious (phishing, social engineering, viruses) or unsolicited messages (spam, marketing). Other functions include email data protection, domain-based message authentication, reporting and conformance (DMARC), investigation, and remediation through a dedicated console. These solutions may integrate as a secure email gateway (SEG) for predelivery protection or as an integrated cloud email security (ICES) solution for postdelivery protection. Email security platforms protect an organization’s email infrastructure from social engineering, phishing, business email compromise, spam, malware attacks and data theft. These platforms are deployed independently but integrated with other network and endpoint security controls to improve the overall risk posture of the organization. They offer cybersecurity teams visibility into email-related security incidents for investigation and remediation.
External attack surface management (EASM) refers to the processes, technology and professional services deployed to discover internet-facing enterprise assets and systems and exposures that could be exploited by malicious threat actors. EASM is useful in identifying unknown assets and providing information about the organization’s systems, cloud services and applications that are available and visible in the public domain and therefore can be exploited by an attacker/adversary. This visibility can also be extended to the organization’s subsidiaries or third parties. EASM are most commonly cloud-based products and services but can also be delivered ‘as a service’. EASM appeals to security operations functions involved with penetration testing, vulnerability management and threat hunting who want better visibility of their internet-facing assets to complement their threat and exposure management program.