Notifications
Clear all
Topic starter
11/07/2026 2:02 pm
TL;DR: Email remains a high-leverage attack path, with Mimecast’s State of Email Security 2022 study citing 79% of respondents seeing more email volume and 72% seeing more email threats, while security teams struggle with alert fatigue, incomplete investigations, and lateral movement risk. Integrated detection and response is now a governance problem, not just a tooling choice.
NHIMG editorial — based on content published by SentinelOne: The State of Email Security
By the numbers:
- 79% of respondents to Mimecast’s State of Email Security 2022 study reported an increase in email volume at their organization.
- 72% reported the number of email-based threats had risen during the past 12 months.
Questions worth separating out
Q: What breaks when email attacks are treated only as messaging problems?
A: Teams miss the point where email becomes an identity attack path.
Q: Why do email attacks so often lead to broader identity compromise?
A: Email is frequently tied to password resets, account recovery, and trusted internal communication.
Q: How can security teams know if their email response is actually working?
A: Look at containment speed, not just detection counts.
Practitioner guidance
- Map email workflows to identity escalation paths Identify where mailbox access, password reset requests, account recovery, and help desk approvals can be chained together by an attacker.
- Pre-authorise cross-layer containment actions Define which actions an analyst can trigger immediately, such as suspending email sending, isolating an endpoint, or locking an account, without waiting for a separate approval cycle.
- Reduce alert noise before expanding automation Normalise email and endpoint detections into a small set of high-confidence incident paths so SOAR or XDR playbooks do not automate low-quality signals.
What's in the full article
SentinelOne's full article covers the operational detail this post intentionally leaves for the source:
- The vendor's side-by-side sample attack timelines showing how XDR changes containment sequencing.
- The specific email and endpoint response actions supported by the integration, including user suspension and quarantine steps.
- The product-level description of SentinelOne Storyline correlation across email, endpoint, mobile, and cloud.
- The joint solution brief framing for teams evaluating integrated email and endpoint response.
👉 Read SentinelOne’s analysis of email security, XDR, and alert fatigue →
Email security and XDR: what it means for SOC teams?
Explore further
11/07/2026 2:12 pm
Alert fatigue is now an access-control problem, not only a SOC problem. When analysts cannot distinguish signal from noise, identity abuse persists long enough for attackers to escalate. That matters because email abuse often becomes credential abuse, account recovery abuse, or privileged workflow abuse. SOC design and IAM governance now need to be aligned, not treated as separate disciplines.
A question worth separating out:
Q: Who is accountable when email abuse turns into identity compromise?
A: Accountability sits across SOC, IAM, help desk operations, and business owners for the affected workflows. If password resets, recovery actions, or mailbox controls can be abused, those processes need named owners and documented escalation paths. NIST CSF and related control frameworks expect clear governance for detection, response, and access control.
👉 Read our full editorial: Email security and XDR are converging against alert overload
