Start with full visibility into accounts, authentications, and access privileges across on-prem and cloud environments. Then map exposure by looking for weak authentication methods, excessive privilege, shadow admins, service accounts, and legacy systems that cannot enforce modern controls. Prioritize findings by impact and likelihood, then remediate the root cause, whether it is a misconfiguration, malpractice, or a coverage gap.
How to structure the assessment around identity risk, not just account inventory
An effective identity risk assessment starts by treating identity as an attack surface, not a directory exercise. The practical question is whether each account, credential, and privilege path can be abused to move, persist, or escalate once an attacker has valid access. That means assessing visibility, authentication strength, privilege design, lifecycle controls, and how quickly compromise can be contained.
The assessment should cover both human and non-human identities because breach activity often uses whichever path is easiest to weaponise. Full visibility matters most where systems are fragmented across on-prem, cloud, SaaS, and legacy estates. NHI Management Group’s Ultimate Guide to NHIs is a useful reference point for the visibility, rotation, offboarding, and least-privilege issues that typically drive identity exposure in real environments.
For teams that need a concrete baseline, the most useful evidence is not a count of accounts, but a map of where strong authentication is missing, where privileges exceed job function, where service accounts are unmanaged, and where legacy systems block modern controls. That is also why compromised credential activity should push teams to look for credential reuse, stale access, and accounts that are still trusted long after ownership has changed.
What to look for when compromised credentials are the breach path
When compromised credentials are driving incidents, the assessment should focus on the conditions that let those credentials become high-impact. Weak MFA coverage, password-only access, shared accounts, shadow administrators, and long-lived secrets all increase the chance that a single compromise becomes broad access. Service accounts and API keys deserve particular attention because they often bypass the scrutiny applied to human users and may have broader reach than anyone intends.
The highest-value findings usually come from mismatch, not volume. A small set of privileged accounts with broad production access is often more dangerous than a large population of low-risk users. Legacy platforms, hardcoded credentials, and externally exposed secrets also matter because they reduce the organisation’s ability to enforce modern control expectations, such as rapid rotation, central revocation, or just-in-time access.
If you need a supporting empirical reference for why this matters, NHI Management Group’s Ultimate Guide to NHIs reports that 97% of NHIs carry excessive privileges and 80% of identity breaches involved compromised non-human identities such as service accounts and API keys. For teams assessing breach-driving credentials, that combination is a strong signal to prioritise privilege review and lifecycle control over simple account enumeration.
Risk is amplified when the same credential can work across environments or when access is inherited through poorly understood trust relationships. That is why shadow admins, over-entitled service principals, and stale privileged tokens should be assessed as control failures, not isolated exceptions.
Practitioner guidance for turning findings into remediation priorities
What to prioritise: Fix the access path that creates the largest blast radius first. If a credential can reach production, administrative functions, or sensitive data, treat it as a containment problem before a hygiene problem. The order of operations should usually be exposure reduction, privilege reduction, and then normalisation of lifecycle and ownership.
What to verify: Every high-risk identity should have a clearly named owner, a documented purpose, and a revocation path that actually works in the systems where it is used. If the team cannot prove how to rotate, expire, or remove an access path, the control is only partially in place. This is especially important for service accounts and other long-lived credentials that are easy to overlook during routine access reviews.
Practitioner takeaway: When compromised credentials are the breach driver, the right assessment output is a ranked list of exploitable trust paths, not a spreadsheet of identities. The goal is to identify which accounts can still create material damage after compromise, then remove that leverage fastest.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0, CIS Controls v8, NIST SP 800-63 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.RM — Risk Management Strategy | Identity risk assessments are part of organisational cyber risk prioritisation. |
| ID.AM — Asset Management | The assessment depends on knowing which accounts, credentials, and access paths exist. | |
| PR.AA — Identity Management, Authentication, and Access Control | Compromised credentials directly implicate authentication strength and access enforcement. | |
| Recommendation — Use GV.RM to rank identity exposure by business impact and threat likelihood. Inventory accounts, privileged paths, and credential-bearing assets before scoring exposure. Strengthen PR.AA controls to reduce credential reuse, weak auth, and overbroad access. | ||
| CIS Controls v8 | 5 — Account Management | Account ownership, lifecycle, and review are central to identity risk assessment. |
| 6 — Access Control Management | Privilege reduction and access-path containment are core to limiting credential abuse. | |
| 5.4 — Disable Dormant Accounts | Stale identities often become usable footholds after credential compromise. | |
| Recommendation — Enforce account ownership, periodic review, and timely removal of unused access. Apply least privilege and revoke excessive access paths that increase breach impact. Disable dormant accounts that still retain valid authentication or access capability. | ||
| NIST SP 800-63 | IAL/AAL/FAL — Identity, Authenticator, and Federation Assurance Levels | Assurance strength helps judge whether authentication is strong enough for sensitive access. |
| Recommendation — Use assurance levels to distinguish high-risk access that needs stronger authentication. | ||
| NIST Zero Trust (SP 800-207) | 5.2 — Policy Decision Point and Policy Enforcement Point | Identity risk is materially reduced when access decisions are continuously enforced. |
| Recommendation — Centralise access policy decisions so compromised credentials cannot roam unchecked. | ||
| OWASP Non-Human Identity Top 10 | NHI-01 — Secrets and Credential Management | Service accounts, API keys, and similar credentials are common breach drivers in identity risk work. |
| NHI-03 — Privilege and Authorization | Excessive permissions and shadow admins are direct identity risk findings. | |
| Recommendation — Manage credential lifecycle, storage, and rotation for non-human access paths. Reduce privileges to the minimum required for each account or service identity. | ||
Related resources from NHI Mgmt Group
- How should security teams run access reviews for non-human identities?
- How should security teams think about a compromised integration like Drift?
- How should security teams reduce identity-based breach risk?
- How should security teams reduce cloud identity risk when credentials are stored in shared infrastructure?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on September 17, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
