Privileged Access Management

To meet the privileged access management requirement, you must control how privileged credentials (admin, root, emergency, and service accounts) are requested, approved, issued, used, reviewed, and revoked across both IT and OT so unauthorized use becomes difficult and detectable (Cybersecurity Capability Maturity Model v2.1). Operationalize this by standardizing workflows, enforcing strong authentication and segregation, and retaining evidence of every privileged access decision and periodic revalidation.

Key takeaways:

• Define and run a single PAM lifecycle: request → approval → provisioning → monitored use → review → revocation (Cybersecurity Capability Maturity Model v2.1).
• Include OT: engineering workstations, historian/admin interfaces, remote access jump hosts, and vendor support paths count.
• Evidence matters as much as controls: keep request/approval records, review results, and exceptions you can defend in an audit (Cybersecurity Capability Maturity Model v2.1).

Privileged Access Management (PAM) is the control layer that prevents “keys to the kingdom” credentials from becoming shared, stale, or invisible. In C2M2, the requirement is straightforward: manage credentials for privileged access to IT and OT assets to reduce the risk of unauthorized use (Cybersecurity Capability Maturity Model v2.1). For a Compliance Officer, CCO, or GRC lead, the practical challenge is scope and proof. You need a crisp definition of “privileged,” a governed process for granting it, and durable artifacts that show the process runs the same way every time.

This page is written for operators who need to stand up requirement-level controls quickly: what systems and accounts are in scope, what procedures must exist, how to assign ownership, and what auditors typically ask for. It also addresses OT realities (shared consoles, vendor remote access, embedded accounts) where “just use SSO” is rarely available. The goal is a PAM program that is defensible: you can explain why privileged access exists, who approved it, how it’s monitored, and how you know it’s still needed.

Regulatory text

Requirement (excerpt): “Credentials for privileged access to IT and OT assets are managed to reduce the risk of unauthorized use.” (Cybersecurity Capability Maturity Model v2.1)

What the operator must do

You must implement and operate controls that manage privileged credentials end-to-end for both IT and OT environments (Cybersecurity Capability Maturity Model v2.1). In practice, this means:

• You know which accounts are privileged (human and non-human).
• Privileged access is granted via an approved workflow with defined criteria.
• Privileged credentials are protected (storage, rotation, MFA where feasible).
• Privileged activity is attributable to a person or controlled identity, monitored, and reviewable.
• Privileged access is periodically revalidated and promptly revoked on triggers (role change, termination, vendor offboarding, incident response).

Plain-English interpretation (what this requirement really means)

Privileged access is any access that can change system state, security configuration, safety configuration, or availability. C2M2 expects you to reduce risk by treating these credentials differently than standard user access (Cybersecurity Capability Maturity Model v2.1). “Managed” does not mean “we have a policy.” It means there is a repeatable operating process that:

1. limits privileged access to justified cases,
2. makes usage traceable,
3. removes access quickly when it’s no longer needed, and
4. produces evidence you can show during an assessment.

Who it applies to (entity and operational context)

This requirement applies to organizations using C2M2 to assess cybersecurity capability for a defined scope, commonly in energy sector and other critical infrastructure contexts (Cybersecurity Capability Maturity Model v2.1). Operationally, it applies wherever privileged credentials exist, including:

In-scope assets (typical)

IT

• Directory/admin platforms (AD, Entra ID admin roles, LDAP)
• Server and database admin accounts
• Cloud control planes (AWS/GCP/Azure privileged roles)
• Security tooling admin roles (SIEM, EDR, email security)
• Network device admin accounts (routers, firewalls, VPN)

OT

• SCADA/HMI engineering and admin roles
• PLC programming environments and engineering workstations
• Jump servers and remote access gateways into OT
• Historian servers, OT domain controllers (if present)
• Vendor remote support pathways and shared maintenance accounts

In-scope identities

• Named admin accounts (e.g., j.smith-admin)
• Break-glass/emergency accounts
• Service accounts and application-to-application credentials
• Privileged vendor accounts (third party support)

What you actually need to do (step-by-step)

Use the steps below as your “minimum viable PAM operating model” aligned to the requirement that privileged credentials are managed to reduce unauthorized use (Cybersecurity Capability Maturity Model v2.1).

Step 1: Define “privileged” and set scope boundaries

1. Create a short privileged access standard: list what counts as privileged in your environment (domain admin, local admin, root, OT engineer role, firewall admin, etc.).
2. Define in-scope systems for the first rollout (prioritize crown jewels and shared admin surfaces: directory services, remote access gateways, OT jump hosts).
3. Set an explicit rule: privileged actions must be performed through controlled methods (separate admin accounts, PAM vault checkout, or approved elevation workflow).

Output: Privileged Access Standard (1–2 pages) and a scoped asset list.

Step 2: Inventory privileged accounts (human + service + vendor)

1. Pull privileged group/role membership from identity platforms.
2. Identify local admin accounts on endpoints/servers, including OT engineering workstations.
3. Enumerate service accounts with elevated rights (scheduled tasks, agents, OT middleware).
4. Capture vendor/third party access paths: VPN accounts, shared credentials, support portals.

Tip: Inventory is where most PAM programs fail. Require each system owner to attest to privileged accounts for their systems.

Output: Privileged Account Register (system, account, type, owner, purpose, approval reference).

Step 3: Implement a governed request and approval workflow

Implement documented criteria and workflow for provisioning privileged access (Cybersecurity Capability Maturity Model v2.1):

1. Request must state business justification, system, role level, duration (if time-bound), and ticket/reference.
2. Require approvals:
   • System owner (risk acceptance for that system)
   • Security/IAM or OT security (policy compliance)
   • Manager approval for the requestor (need-to-have confirmation)
3. Segregate duties: the approver cannot be the same person who provisions access for their own account except via an emergency exception path.

Output: Access request template, approval routing rules, and a RACI.

Step 4: Provision privileged access using controlled patterns

Pick patterns you can enforce and evidence:

Recommended provisioning patterns

• Separate admin accounts for administrators (no daily-use account with permanent admin rights).
• Time-bound elevation where feasible (temporary membership in privileged groups, or privileged session access).
• PAM vault for shared credentials (especially common in OT where some systems cannot map to individual identities).
• Service account controls: named owner, documented purpose, credential storage, rotation method, and restricted permissions.

Output: Provisioning runbooks and configuration baselines for each pattern.

Step 5: Control privileged authentication and session use

Minimum operational controls that reduce unauthorized use:

• Strong authentication for privileged access (MFA where technically feasible; compensating controls where not feasible).
• Restrict entry points (jump hosts, bastions, controlled admin workstations).
• Log privileged activity in a way that ties actions to a person or controlled identity.
• Alert on high-risk events (new privileged account creation, privilege escalation, disabled logging, new remote access path).

Output: Logging/monitoring requirements mapped to privileged systems, plus alert runbooks.

Step 6: Review and revalidate privileged access

C2M2 expects defined review cadence and revalidation evidence (Cybersecurity Capability Maturity Model v2.1):

1. Run periodic access reviews for privileged groups/roles and OT privileged accounts.
2. Require system owners to re-approve or remove access.
3. Track completion, outcomes, and exceptions with rationale and expiration.

Output: Access review reports, owner attestations, exception log.

Step 7: Define revocation triggers and execute them reliably

Define and test triggers (Cybersecurity Capability Maturity Model v2.1):

• Termination or contract end (third party offboarding included)
• Role change / transfer
• Incident response containment action
• Dormant privileged account thresholds (your policy-defined rule)
• Vendor support window ended

Output: Deprovisioning checklist, HR/ITSM integration notes, evidence of completed revocations.

Required evidence and artifacts to retain

Auditors and assessors will look for both design and operating effectiveness. Retain:

• Privileged Access Management policy/standard with definitions and scope (Cybersecurity Capability Maturity Model v2.1)
• Approval criteria and workflow documentation (Cybersecurity Capability Maturity Model v2.1)
• Privileged Account Register (human, service, break-glass, third party)
• Access requests and approvals (tickets, emails, workflow records) (Cybersecurity Capability Maturity Model v2.1)
• Provisioning evidence (system screenshots, IAM logs, group membership change logs)
• Periodic access review results and remediation tracking (Cybersecurity Capability Maturity Model v2.1)
• Exception records with rationale, compensating controls, and expiry (Cybersecurity Capability Maturity Model v2.1)
• Revocation evidence for key triggers (termination samples, vendor offboarding samples)
• Monitoring evidence (SIEM queries, alert screenshots, privileged session logs where available)

Practical note: Store these artifacts in a single audit-ready binder (GRC repository) by system and by review period. Daydream is a natural place to centralize the privileged access evidence set, link it to system ownership, and track exceptions to closure without spreadsheet sprawl.

Common exam/audit questions and hangups

Expect these lines of questioning:

• “Show me your definition of privileged access and which systems are covered.”
• “How do you ensure privileged access is approved by the right owner?”
• “How do you manage service accounts with admin rights?”
• “How do you handle OT systems that require shared admin passwords?”
• “Provide evidence of a recent privileged access review and the removals that resulted.”
• “What are your revocation triggers, and show an example for a terminated admin or offboarded third party.” (Cybersecurity Capability Maturity Model v2.1)

Common hangup: teams can describe controls verbally but cannot produce request/approval records and review outputs quickly. Treat evidence retrieval time as a control requirement, not an administrative nuisance.

Frequent implementation mistakes (and how to avoid them)

Mistake	Why it fails	Fix
“We have PAM for IT, OT is out of scope.”	The requirement explicitly includes OT assets (Cybersecurity Capability Maturity Model v2.1).	Start with OT jump hosts, remote access, and engineering workstations; document compensating controls for legacy endpoints.
Inventory excludes service accounts	Service accounts are often high privilege and long-lived.	Require an owner, purpose, least privilege, and storage/rotation method for every service account.
Shared admin passwords with no governance	No attribution; hard to prove authorized use.	Vault shared creds, issue per-session checkout, log checkouts, and require tickets.
Access reviews are ad hoc	You cannot show consistent “managed” operation.	Establish a calendar, owner attestation workflow, and an exception register with expirations.
Break-glass accounts exist but are never tested	Emergency paths rot; audit fails on control effectiveness.	Test break-glass access under controlled conditions and record results; rotate credentials after use/testing.

Risk implications (why assessors care)

Privileged credential misuse is a common path to full-environment compromise because it bypasses normal access boundaries. In OT, privileged access can also affect availability and safety. From a governance standpoint, weak PAM creates two audit problems: (1) you cannot justify why access exists, and (2) you cannot prove you removed it when circumstances changed (Cybersecurity Capability Maturity Model v2.1). Both translate into higher residual risk and harder customer diligence conversations.

Practical 30/60/90-day execution plan

First 30 days (establish control foundations)

• Publish privileged access definitions and initial scope for IT and OT (Cybersecurity Capability Maturity Model v2.1).
• Build the privileged account inventory for the scoped systems.
• Stand up an approval workflow in your ITSM/IAM tooling with required approvers and required fields (Cybersecurity Capability Maturity Model v2.1).
• Create an exception register format (owner, rationale, compensating control, expiry).

Days 31–60 (implement and generate evidence)

• Move high-risk systems to controlled provisioning patterns (separate admin accounts; vault shared OT credentials).
• Turn on logging/alerting for privileged events on the scoped systems; document the monitoring runbook.
• Run your first privileged access review cycle and record outcomes (Cybersecurity Capability Maturity Model v2.1).
• Validate revocation triggers with HR/offboarding and third party offboarding workflows.

Days 61–90 (expand coverage and harden operations)

• Expand scope to additional privileged surfaces (network devices, cloud roles, remaining OT admin interfaces).
• Reduce exceptions by upgrading legacy patterns (replace shared creds with named accounts where possible).
• Add periodic checks: dormant privileged accounts, service account owner attestations, break-glass test evidence.
• Consolidate artifacts into an audit-ready repository and map each to the requirement language (Cybersecurity Capability Maturity Model v2.1).

Frequently Asked Questions

Does PAM apply to OT environments even if our OT systems can’t integrate with SSO?

Yes. The requirement explicitly covers IT and OT assets, so you need compensating controls such as vaulting shared credentials, restricting access paths through jump hosts, and keeping approval and checkout logs (Cybersecurity Capability Maturity Model v2.1).

Are service accounts in scope for privileged access management?

Yes. Service accounts often have elevated rights and persist for long periods, so treat them as privileged credentials with owners, purpose, storage/rotation controls, and periodic review evidence (Cybersecurity Capability Maturity Model v2.1).

What evidence will an assessor accept if we can’t record privileged sessions?

You can still meet the “managed” expectation with strong approval records, credential vault checkout logs, privileged group change logs, and periodic access review outputs that show revalidation and removals (Cybersecurity Capability Maturity Model v2.1).

How do we handle break-glass accounts without creating an audit finding?

Document the break-glass process, restrict who can access it, require ticketing for use, rotate credentials after any use, and keep test records that show the access path works as designed.

How do we manage third party privileged access for vendors and integrators?

Require named accounts where possible, time-bound approvals, restricted connection paths, and documented offboarding triggers. Keep the third party’s access requests, approvals, and revocation evidence in the same evidence set as employees (Cybersecurity Capability Maturity Model v2.1).

What should we do if a plant insists on shared local admin passwords?

Treat it as an exception with compensating controls: vault the password, require per-use checkout tied to a ticket, limit who can request checkout, and review checkout logs during periodic access reviews (Cybersecurity Capability Maturity Model v2.1).