Active directory attack detection: are your controls keeping up?

TL;DR: Active Directory attacks often bypass SIEM and standalone MFA because they exploit replication abuse, Kerberoasting, and over-permissioned accounts that only continuous identity monitoring catches, according to Unosecur. The governance lesson is that identity attack paths must be detected in motion, not reconstructed after damage has already spread.

NHIMG editorial — based on content published by Unosecur: How ITDR solutions protect against active directory attacks

By the numbers:

• Lack of credential rotation is cited as the top cause of NHI-related attacks by 45% of organisations, followed by inadequate monitoring and logging (37%) and over-privileged accounts (37%).

Questions worth separating out

Q: What breaks when Active Directory attacks are only monitored through SIEM logs?

A: SIEM-only monitoring breaks when identity abuse unfolds as a chain of small, valid-looking actions.

Q: Why do over-permissioned Active Directory accounts increase breach impact?

A: Over-permissioned accounts expand the paths an attacker can reuse after the first foothold.

Q: How can security teams know whether JIT privilege is actually reducing risk?

A: JIT is working only if it shortens the time an attacker can use elevated access and removes standing routes to high-value objects.

Practitioner guidance

• Build replication abuse detections Create alerts for abnormal DCSync-like replication requests, rogue domain controller registration attempts, and sudden changes in replication-related rights.
• Hunt for standing privilege in AD Review ACLs, nested groups, and service account permissions for rights that outlast the current business need.
• Constrain service account exposure Prioritise stronger password policy, rotation discipline, and usage monitoring for service accounts that authenticate to directory services or privileged infrastructure.

What's in the full article

Unosecur's full blog covers the operational detail this post intentionally leaves for the source:

• Step-by-step detection logic for DCSync, DCShadow, and Kerberoasting behaviour in Active Directory environments
• Concrete response actions for isolating compromised identities, resetting passwords, and revoking access during an AD attack
• Architecture guidance for integrating ITDR with existing SIEM and XDR workflows without losing identity context
• The article's full ransomware case study showing how directory compromise translated into domain takeover and data theft

👉 Read Unosecur's analysis of Active Directory attack detection and ITDR →

Active directory attack detection: are your controls keeping up?

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