They should treat zero trust as an identity governance problem, not just a network redesign. That means strengthening authentication for sensitive access, continuously validating entitlement decisions, and tying high-risk access to explicit evidence. If access still depends on one-time trust at login, the programme has not really moved to zero trust.
How EO 14028 Changes the IAM Job
For IAM teams, EO 14028 should be read as a directive to make identity the control plane for zero trust, not as a narrow mandate to buy a new perimeter stack. That shifts priority toward stronger authentication, tighter entitlement governance, better visibility into privileged access, and proof that access decisions are being re-evaluated as conditions change.
The practical implication is that IAM teams need to own the parts of zero trust that actually reduce implicit trust: who or what is authenticated, what that actor is allowed to do, and how quickly those permissions can be withdrawn or constrained when risk changes.
That is why zero trust work often lands in IAM and governance first, even when the broader programme is led by network or platform teams. The control objective is consistent identity-backed authorization across users, admins, service identities, and connected workloads, not a one-time login event.
What “Identity as the Control Plane” Means in Practice
Zero trust requirements change IAM design in three ways. First, authentication must be stronger for sensitive access, especially for privileged users, administrators, and high-impact systems. Second, authorization must become more dynamic, with entitlement decisions continuously validated instead of assumed to remain valid after login. Third, access governance must produce evidence, so the organisation can show why elevated access existed, who approved it, and when it should end.
That is a different operating model from traditional IAM hygiene. Static roles, stale group membership, and long-lived privileged sessions all leave too much standing trust in place. A zero trust-aligned IAM programme reduces that trust by making access more explicit, more time-bound, and more reviewable.
In practice, this usually means pairing identity policy with device posture, context, and least privilege decisions. The aim is not to eliminate all access friction, but to make sensitive access conditional on current trust signals rather than on a previous successful login.
Where IAM Teams Should Focus First
Start with the access paths that matter most to mission impact: privileged administrators, remote access, production systems, and identities that can reach sensitive data or operational controls. Those are the places where a weak authentication factor, overbroad entitlement, or dormant service credential will most quickly defeat a zero trust programme.
Then harden the governance loop around those paths. If an entitlement cannot be justified, reviewed, and removed quickly, it is still effectively standing privilege. If an access review cannot explain why a high-risk permission exists, the programme is not yet behaving like zero trust.
Identity-centric zero trust also depends on workload and machine access, not just human users. Service accounts, API credentials, and workload identities need the same discipline around proof, scope, and review that human admin access receives, otherwise the control model is inconsistent and easy to bypass.
Risk and Threat Considerations
Zero trust failures usually happen when organisations preserve old trust habits inside new architecture. If identity is authenticated once and then broadly trusted for the rest of a session, an attacker who steals that identity can move laterally, reuse standing privilege, or abuse stale entitlements with very little resistance.
Failure mechanism: weak MFA coverage, excessive privilege, long-lived sessions, and incomplete entitlement review leave access paths that still behave like perimeter trust, even after zero trust language has been adopted.
Impact: credential theft, privilege abuse, and unauthorized access become easier to scale, especially where administrators, third-party access, or machine credentials can reach production systems or sensitive data without strong revalidation.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5, NIST Zero Trust (SP 800-207) and CIS Controls v8 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | EO 14028 zero trust requires stronger, managed authenticators for sensitive access. |
| AC-2 — Account Management | Zero trust IAM depends on continuous control of account and entitlement lifecycle. | |
| IA-2 — Identification and Authentication (Organizational Users) | EO 14028 drives stronger user authentication for high-risk access paths. | |
| Recommendation — Tighten authenticator lifecycle and rotation for privileged and sensitive access. Review, time-limit, and revoke accounts and entitlements on a strict schedule. Enforce stronger authentication for users accessing sensitive systems. | ||
| NIST Zero Trust (SP 800-207) | Zero Trust Architecture | EO 14028 is commonly implemented through zero trust architecture principles. |
| Recommendation — Map IAM controls to zero trust principles of verify explicitly and assume breach. | ||
| CIS Controls v8 | CIS-5 — Account Management | EO 14028-adjacent zero trust work requires disciplined account and privilege governance. |
| Recommendation — Maintain accurate accounts, privileges, and timely removal of inactive access. | ||
Practitioner Guidance
What to prioritise: Put privileged users, remote access, and non-human identities through the strictest policy first. Those are the access paths where a zero trust gap is most likely to become a real breach path rather than a compliance issue.
What to verify: For every high-risk access path, confirm that the identity is strongly authenticated, the entitlement is explicitly justified, and the permission can be withdrawn without waiting for a human to notice misuse. If any of those three is missing, treat the path as incomplete.
Decision rule: If access depends on a one-time trust decision at login, it has not yet met the zero trust intent of EO 14028. Move toward continuous validation, tighter privilege boundaries, and evidence-backed access review before calling the programme complete.
Practitioner takeaway: The real test is whether IAM can prove that sensitive access stays justified after the login event, because zero trust is earned through ongoing authorization, not through a stronger password alone.