Gartner Research

How to Build an Effective Email Security Architecture

Published: 14 June 2018

ID: G00352350

Analyst(s): Patrick Hevesi , Mario de Boer

Summary

Email is the most commonly used channel for both opportunistic and targeted attacks on client endpoints. This assessment analyzes how technical professionals can use email security technologies to protect against attacks such as business email compromise, advanced malware, phishing and spoofing.

Table Of Contents

Comparison

  • Countermeasures to Email Security Threats

Analysis

  • Email Threat Techniques and Methods
  • Why Attackers Use Email
  • Email Security Architecture
    • Secure Email Gateway
    • Email Service Security
    • Integrated Email Security Solutions
    • Anti-Phishing Behavior Management
    • Email Authentication
    • Brand Protection
    • Endpoint Security
    • Additional Components
  • Detailed Countermeasures to Email Threat Techniques
    • Phase No. 1: Target Identification — Don't Be an Obvious Target
    • Phase No. 2: Countering Infrastructure/Preparation by Hardening Your Email Infrastructure
    • Phase No. 3: Anti-Spoofing to Counter Identity Deception
    • Phase No. 4: Protection Against Nefarious Messages
    • Phase No. 5: Thwarting the Attacker's Objective With Postdelivery Protection
    • Actions: Options for Disruptions
  • The Impact of Cloud and Mobile on Email Security

Guidance

  • Design an Email Security Architecture in Light of Modern Email Threats
  • Enforce Policies to Lock Down the Delivery of Attachments and URLs
  • Implement Email Authentication
  • Protect Your Email Servers and Inboxes
  • Prefer Solutions That Use Anomaly Detection

The Details

  • Dissecting Four Common Email Threats
    • Example Threat No. 1: Ransomware Spreading Through Spam
    • Example Threat No. 2: Business Email Compromise
    • Example Threat No. 3: Scammers Spoofing Your Domain Externally
    • Example Threat No. 4: O365 Account Takeover Through Credential Phishing

Gartner Recommended Reading

©2019 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner is a registered trademark of Gartner, Inc. and its affiliates. This publication may not be reproduced or distributed in any form without Gartner’s prior written permission. It consists of the opinions of Gartner’s research organization, which should not be construed as statements of fact. While the information contained in this publication has been obtained from sources believed to be reliable, Gartner disclaims all warranties as to the accuracy, completeness or adequacy of such information. Although Gartner research may address legal and financial issues, Gartner does not provide legal or investment advice and its research should not be construed or used as such. Your access and use of this publication are governed by Gartner’s Usage Policy. Gartner prides itself on its reputation for independence and objectivity. Its research is produced independently by its research organization without input or influence from any third party. For further information, see Guiding Principles on Independence and Objectivity.

Already have a Gartner Account?

Become a client