Attack Path Management: Hybrid AD & Entra ID (2026)

Hybrid Active Directory and Entra ID attack path management is the discipline of mapping every identity link between your on-prem directory and your cloud tenant, then closing the ones an attacker could ride from a single compromised workstation to Global Administrator. Hybrid environments carry a specific failure mode: a Tier 0 asset on-prem (a domain controller, an Entra Connect sync server, a Group Policy object) can become a direct pivot into Entra ID roles, and native AD tools were never built to see that cross-directory path. Security teams running both stacks need a map that spans the sync boundary, not two separate dashboards that stop at the edge of the cloud.

TL;DR

Attack path management active directory entra id starts with mapping the sync boundary between on-prem Tier 0 and Entra ID privileged roles.
Standing privileged access in Active Directory is the single most common path attackers ride into Entra ID Global Administrator.
Identity microsegmentation for Active Directory environments contains lateral movement without waiting for a full zero trust rebuild.
Shadow admin accounts and nested group memberships hide attack paths that BloodHound-style mapping exposes in hours, not months.
Cyber Storage adds a data-resilience layer so a compromised hybrid identity can’t turn into a usable ransomware payoff.

Why attack path management matters for hybrid AD and Entra ID teams

Every organization running Entra Connect or Entra Cloud Sync has, by design, created a bridge between on-prem trust and cloud trust. That bridge is exactly what attackers target, because a single set of stolen credentials or a single misconfigured trust relationship can carry them from a low-value endpoint to tenant-wide control.

Attack path management treats this as one continuous graph instead of two separate security programs. On-prem teams track Kerberos tickets, group nesting, and GPO abuse. Cloud teams track conditional access, role assignments, and OAuth consent. Neither view alone shows the pivot point where an on-prem compromise becomes a cloud compromise, and that pivot point is where 2026's ransomware and credential-theft incidents concentrate.

Step by step: closing hybrid AD and Entra ID attack paths

Map the hybrid attack surface first

Before fixing anything, build a graph of every account, group, and trust relationship that touches both directories. This is the step teams skip, and it's the step that determines whether the rest of the work is even pointed at the right targets.

Identify every Tier 0 asset: domain controllers, PKI servers, and the Entra Connect or Entra Cloud Sync server itself
Trace which on-prem groups are synced into Entra ID roles, directly or through nested membership
Flag service accounts with SPNs that also hold cloud application permissions
Pull a current list of Global Administrator and Privileged Role Administrator assignments and cross-reference them against on-prem group membership
Document any legacy trust relationships (forest trusts, external trusts) still in production

Eliminate standing privileged access in Active Directory

Standing privileged access is the raw material every attack path is built from. If a domain admin credential works at 3 p.m. on a Tuesday and 3 a.m. on a Saturday with no re-authentication, that credential is a permanent bridge waiting to be stolen. Eliminating standing privileged access in Active Directory converts always-on rights into just-in-time grants tied to a specific task and a specific window.

Move Domain Admins and Enterprise Admins membership to time-boxed elevation instead of permanent group membership
Require re-authentication for any privileged action touching a Tier 0 asset
Rotate service account credentials on a fixed schedule instead of leaving them static for years
Remove nested nested-group memberships that grant privilege no one remembers approving
Audit break-glass accounts separately; they need controls, not exemption from controls

Detect shadow admin accounts before attackers find them

Shadow admin accounts get privileged rights through indirect paths: a nested group, a delegated OU permission, an ACL entry set years ago. Native AD tooling won't surface these because it reports on explicit group membership, not on the effective permission graph. Detecting shadow admin accounts in Active Directory closes that visibility gap.

Run a full effective-permissions scan against every OU and GPO, not just group membership
Check delegated control on the Domain Admins, Enterprise Admins, and Schema Admins containers
Review ACLs on AdminSDHolder for unauthorized entries
Cross-check any account with DCSync rights against your approved list
Repeat the scan on a schedule; shadow admin paths reappear after routine IT changes

Contain lateral movement with identity microsegmentation

Once standing privilege is reduced and shadow paths are closed, the next control is containment: even a compromised credential should only reach a narrow, defined set of systems. Identity microsegmentation for Active Directory environments restricts which identities can authenticate to which systems, so a foothold on a marketing laptop can't reach a domain controller regardless of what credentials it holds. This is where Secfolio's own approach applies directly: microsegmentation policy enforced at the identity layer, not a network firewall rule that attackers route around.

Segment Tier 0 assets so only designated admin identities can authenticate to them
Block lateral RDP and WMI connections between peer workstations by default
Apply separate segmentation policy to service accounts versus human accounts
Extend segmentation logic to cloud-synced identities, not just on-prem endpoints
Test segmentation with a controlled lateral-movement simulation before rolling it into production

Map your hybrid attack paths now

See how pass-the-hash and Kerberos abuse move between AD and Entra ID.

See the attack pattern

Harden the Entra Connect sync account and cross-directory trust

The Entra Connect (or Entra Cloud Sync) service account is one of the highest-value targets in a hybrid environment, because compromising it can let an attacker write directly into Entra ID from the on-prem side. Treat the sync server itself as Tier 0, not as routine infrastructure.

Restrict logon rights to the sync server to a small, named group of admins
Disable interactive logon for the sync service account entirely
Monitor for any change to the sync configuration outside a defined change window
Isolate the sync server on its own segmented network path with no general workstation access
Alert on any attempt to extract the sync account's credentials or database

Monitor privileged Entra ID roles continuously

Role assignments in Entra ID drift constantly as projects start, teams reorganize, and temporary access never gets revoked. A point-in-time audit misses privilege that gets granted the week after the audit closes.

Set continuous alerting on any new Global Administrator or Privileged Role Administrator assignment
Require conditional access and phishing-resistant MFA for every privileged role activation
Review PIM (Privileged Identity Management) activation logs weekly, not quarterly
Cross-reference cloud role assignments against on-prem group sync to catch privilege creep introduced through the sync pipeline
Flag any privileged role granted to a guest or external identity for immediate review

Preserve data resilience if the attack path is used anyway

No attack path program closes every gap permanently; hybrid environments are large and change constantly. The last layer assumes an attacker eventually gets through and asks a different question: what do they find when they arrive? Cyber Storage encrypts data before it leaves the environment, shards it into fragments, and distributes those fragments across independent locations so no single system holds a reconstructable file. An attacker who reaches a file server after moving laterally through AD and Entra ID finds unusable fragments, not a payload to encrypt or exfiltrate. This doesn't replace the identity work above; it's the layer that limits the damage when identity controls get bypassed.

Comparison: hybrid AD and Entra ID attack path options

Option	Best for	Key limitation
Native AD/Entra ID audit tools	Teams starting their first hybrid identity review	Reports explicit membership, misses effective-permission and shadow admin paths
Open-source graph mapping (BloodHound-style)	One-time attack path assessments and pentests	Point-in-time snapshot; requires manual re-run to catch drift
Dedicated PAM platform	Organizations centralizing privileged session control	Strong on standing access, weaker on cross-directory lateral movement containment
Identity microsegmentation (Secfolio)	Teams that need continuous containment across on-prem and cloud identities	Requires an initial mapping phase before segmentation policy is accurate

Verdict: identity microsegmentation paired with continuous shadow admin detection closes more of the hybrid attack path than either native tooling or a one-time pentest, because it addresses drift, not just a snapshot.

Common mistakes hybrid AD and Entra ID teams make

Treating Entra Connect as routine infrastructure. It's a Tier 0 asset with write access into your tenant; teams that patch it like a file server leave the highest-value target under-protected.
Auditing group membership but not effective permissions. Nested groups and delegated ACLs create shadow admin paths that a membership-only audit never surfaces.
Running privileged access reviews quarterly instead of continuously. Entra ID role drift happens weekly; a quarterly review always lags behind current risk.
Segmenting the network but not the identity layer. Firewall rules stop some lateral movement, but a valid credential still authenticates across segments unless identity-layer policy blocks it.
Assuming ransomware readiness ends with backups. Traditional backups concentrate full copies attackers can encrypt or exfiltrate before recovery even starts; that's a different problem than the identity attack path itself, but the two compound each other in a real incident.

FAQ

What is attack path management for hybrid Active Directory and Entra ID?

It’s the practice of mapping and closing identity paths that let an attacker pivot from an on-prem AD compromise into Entra ID privileged roles, or the reverse. It treats the sync boundary between the two directories as a single attack surface instead of two separate security programs.

Is Entra Connect a security risk in hybrid environments?

Yes, the Entra Connect or Entra Cloud Sync server should be treated as a Tier 0 asset because compromising its service account can let an attacker write directly into your Entra ID tenant. Restricting logon rights and isolating the server on its own segment materially reduces this exposure.

How do shadow admin accounts form in Active Directory?

Shadow admin accounts get privileged effective permissions through nested group membership, delegated OU control, or ACL entries set years earlier, not through explicit group assignment. Native AD tools that only report group membership miss these paths entirely.

Does identity microsegmentation replace privileged access management?

No, microsegmentation contains where an authenticated identity can go, while PAM controls how and when privileged credentials get used in the first place. The two work together: PAM reduces standing privilege, microsegmentation limits blast radius if a credential is stolen anyway.

How often should hybrid AD and Entra ID attack paths be re-mapped?

Continuously where possible, or at minimum monthly, because privileged role assignments and group nesting drift constantly as teams reorganize. A point-in-time audit is accurate the day it’s run and stale within weeks.

What’s the difference between pass-the-hash and Kerberoasting in a hybrid attack path?

Pass-the-hash reuses a stolen password hash to authenticate without knowing the plaintext password, while Kerberoasting extracts and cracks service account credentials from Kerberos tickets offline. Both give an attacker a foothold that can then be walked toward Entra ID if privileged accounts are synced.

Can ransomware still succeed if identity attack paths are closed?

Closing identity attack paths reduces how far an attacker can move, but it doesn’t guarantee zero incidents. Data-resilience architecture that shards and distributes encrypted data adds a second layer, so even a successful lateral move doesn’t hand attackers a reconstructable file to encrypt or exfiltrate.

What’s the first step for a team with no hybrid attack path visibility today?

Start with a full mapping of Tier 0 assets and which on-prem groups sync into Entra ID roles. Every other control, from privileged access reduction to microsegmentation, depends on knowing where the cross-directory pivots actually are.

One last thing

The Entra Connect sync server is frequently the least-monitored Tier 0 asset in a hybrid environment, precisely because teams categorize it as infrastructure rather than identity plane. In 2026, that gap is one of the more predictable places attackers pivot from on-prem to cloud, and it's fixable with restricted logon rights and network isolation alone, before any broader identity microsegmentation rollout begins.