You should avoid shared accounts wherever possible and replace them with named accounts, groups, or delegated access. If a shared credential cannot be removed immediately, restrict its use, store it in a controlled vault, rotate it after every known use, and log all activity. Shared credentials obscure accountability and increase the chance of undiscovered misuse.
Why shared accounts are a governance problem in Entra ID
Shared accounts in microsoft entra id should be treated as a temporary exception, not an operating model. They collapse accountability because multiple people can act through the same sign-in, which weakens audit trails, makes access reviews less reliable, and turns routine administration into a hidden privilege problem. Use named accounts, role-based access, or delegated access wherever the task allows it.
When a shared account is still unavoidable, define exactly who may use it, for what purpose, and under what time window. That means limiting membership, avoiding casual reuse across teams or environments, and separating human convenience from administrative authority. The practical test is whether you can still answer who did what, when, and why from the logs alone.
For broader identity governance and shared-account lifecycle concerns, the Top 10 NHI Issues covers the same accountability and credential-control failure patterns that shared access tends to create.
What to do when a shared credential cannot be removed yet
If removal is not immediate, reduce the blast radius rather than treating the account as normal access. Put the secret in a controlled vault, restrict retrieval to the smallest possible set of operators, and require rotation after every known use. A shared credential should never become a long-lived convenience secret that survives staff changes, incidents, or informal handoffs.
Keep the permission set as narrow as the task permits. If the account is used for administration, scope it to the minimum resource set and avoid broad tenant-wide roles unless there is a documented operational need. If the account is used for integration or automation, prefer delegated access or a non-shared service identity instead of copying the same secret across tools or scripts.
The Privileged Access Management Guide is the right internal reference when a shared credential is really standing in for privileged access, vaulting, rotation, and session control.
Microsoft’s Entra ID guidance should be consulted alongside your own control design so that any temporary exception aligns with the platform’s supported delegated-access and administrative patterns.
How to detect misuse and reduce residual risk
Shared credentials need stronger observation because you lose person-level clarity at the identity layer. Turn on logging, review sign-in and audit activity regularly, and treat unusual source, time, device, or location patterns as a warning that the account is being used outside the intended workflow. If the account is highly privileged, alerting should be tighter than for ordinary operational accounts.
Be especially careful with shared credentials that touch email, admin portals, tenant configuration, or automation permissions. Those accounts often expose far more than the immediate application, so a single misuse event can create lateral movement, privilege escalation, or data exposure. If you cannot quickly prove the account was used only for its intended purpose, assume the control is too weak.
The Secrets Management Guide is useful when the main challenge is how to centralise, protect, and rotate the shared secret rather than how to redesign the workflow.
Risk and Threat Considerations
Shared accounts create a predictable abuse path: once the credential is copied, the organisation loses clear attribution and may not notice misuse until after impact. The longer a shared secret remains valid, the more likely it is to be reused outside its original purpose or recovered from a place that was never meant to be trusted.
Failure mechanism: Multiple users or processes authenticate with the same Entra ID identity, so audit logs no longer distinguish legitimate action from misuse, and compromise of one holder becomes compromise of the whole account.
Impact: Attackers or insider misuse can hide inside normal activity, extend access across tenants or apps, and force a broader response such as credential rotation, session revocation, and privilege review.
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 addresses the attack surface, NIST SP 800-53 Rev 5 sets the technical controls, and ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | Shared credentials require controlled storage, rotation, and revocation. |
| AU-2 — Event Logging | Shared accounts need activity logs to preserve accountability and investigation paths. | |
| AC-6 — Least Privilege | Shared access should be narrowed to the minimum permissions needed for the task. | |
| Recommendation — Manage shared secrets centrally and rotate or revoke them after use. Log shared-account use with enough detail to attribute actions and investigate misuse. Restrict shared-account permissions to the minimum required for its approved function. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | Shared accounts are an access-control issue requiring governed exceptions and restricted use. |
| Recommendation — Define and enforce access restrictions for any shared account exception. | ||
| OWASP Non-Human Identity Top 10 | NHI-07 — Long-Lived Secrets | Shared credentials become risky when they persist beyond a short operational need. |
| Recommendation — Replace long-lived shared secrets with short-lived, tightly controlled credentials. | ||
Practitioner Guidance
What to prioritise: Replace the shared account first wherever a named account plus delegated permission can satisfy the same business need. If the account must remain, treat it as a controlled exception with a clear owner, purpose, and expiry date.
What to verify: Confirm that the credential is stored in a vault, that retrieval is limited, that rotation occurs after every known use, and that logs can still support a useful investigation if misuse is suspected. If those four conditions are not true, the shared account is not being handled securely enough.
Common mistake: Teams often secure the password but leave the operating model unchanged. That improves secrecy, but it does not fix accountability, privilege creep, or the risk that the same secret is reused in multiple places.
Practitioner takeaway: The secure answer is usually to remove the shared account entirely; when that is not yet possible, shrink its privilege, shorten its lifetime, and make every use visible and attributable.
Related resources from NHI Mgmt Group
- How do you add and manage app credentials securely in Microsoft Entra ID?
- How do you set up Microsoft Entra Verified ID for verifiable credentials?
- How do you configure self-service password reset securely in Microsoft Entra ID?
- How do you find and manage inactive user accounts in Microsoft Entra ID?