What should organisations review first when shared accounts are still necessary?

Start with the highest-risk shared accounts used for admin, support, contractor, or emergency access. Then verify that each one has a named business owner, approved user list, and offboarding trigger. If those three elements are missing, the account is operationally convenient but governance-poor.

Why This Matters for Security Teams

When shared accounts cannot be eliminated immediately, the first review should focus on whether those accounts are governed as controlled exceptions or treated as convenience shortcuts. The practical risk is not just shared use, but shared ambiguity: no clear owner, no reliable user list, and no trigger to remove access when the need ends. That is where accountability collapses and incident response slows down. NHI Management Group notes in the Ultimate Guide to NHIs that only 20% of organisations have formal processes for offboarding and revoking API keys, which is a useful indicator of how often shared access outlives its purpose. Security teams should treat these accounts as high-priority because they often sit in admin, support, contractor, and emergency workflows where privilege is already elevated. Current guidance from NIST SP 800-53 Rev 5 Security and Privacy Controls reinforces the need for accountable access governance, but the real test is whether the organisation can answer who is using the account, why, and for how long. In practice, many security teams discover shared-account misuse only after an audit gap, a contractor exit, or a support escalation has already exposed the weakness.

How It Works in Practice

A useful first-pass review starts with the accounts most likely to cause damage if abused. That means admin logins, break-glass access, help desk accounts, contractor credentials, and any shared identity that can reach production or sensitive data. For each one, security teams should verify three basics before anything else: a named business owner, an approved user list, and a defined offboarding trigger. Those are the minimum controls that turn a shared account from an informal convenience into a governed exception.

A practical review usually includes:

• Confirming the account’s purpose and whether a single-user replacement is possible
• Checking whether access is tied to job function, ticket, or time-bound approval
• Reviewing last-use activity, especially for dormant emergency or support accounts
• Ensuring the offboarding trigger is explicit, such as contractor end date or role change
• Mapping the account to logging, alerting, and periodic recertification

This is also where broad NHI visibility matters. The Ultimate Guide to NHIs notes that only 5.7% of organisations have full visibility into their service accounts, which explains why shared accounts often escape review until they become an incident. NIST’s access control guidance in NIST SP 800-53 Rev 5 Security and Privacy Controls supports enforcing accountability, least privilege, and reviewability, but those controls only work if the account is actually inventoried and owned. These controls tend to break down in outsourced support environments where multiple teams reuse the same login and no single manager is responsible for removal.

Common Variations and Edge Cases

Tighter control over shared accounts often increases operational friction, so organisations have to balance speed against accountability. That tradeoff is most visible in break-glass and emergency access, where immediate availability matters, but permanent shared access creates long-term risk. Best practice is evolving here: there is no universal standard for every environment, but current guidance suggests that emergency accounts should be rare, heavily monitored, and reviewed after every use.

Edge cases often include legacy systems that do not support named users, vendor-managed platforms, and plant or lab environments where a shared console is still unavoidable. In those situations, the review should focus on containment, not perfection: enforce strong logging, narrow network reach, time-bound activation where possible, and documented ownership outside the system itself. The most important question is whether the shared account is still necessary or merely inherited. If the answer is necessity, the governance burden rises immediately.

The NHI risk picture described in the Ultimate Guide to NHIs is especially relevant because excessive privilege and weak offboarding are common failure patterns. For policy design, NIST SP 800-53 Rev 5 Security and Privacy Controls provides a stronger baseline than ad hoc approvals, but organisations still need an explicit exception process for legacy shared access. The hardest cases are environments where shared accounts are embedded in vendor contracts or industrial workflows, because removing them requires coordination beyond the security team.

Related resources from NHI Mgmt Group

• How should financial organisations govern shared accounts without losing accountability?
• Should organisations prioritise external exposure or internal credential governance first?
• Why do non-human identities create more audit risk than human accounts?
• How should security teams govern non-human identities alongside human accounts?