Should organisations treat service accounts like user accounts in Dynamics controls?

Why This Matters for Security Teams

service account look simple in a directory, but they behave like infrastructure access paths, not like people. Treating them as user accounts often leads to the wrong control set: password expiry rules without rotation discipline, manual approval flows without lifecycle ownership, and access reviews that miss machine-to-machine blast radius. That gap is why NHI governance exists as a distinct discipline in the first place, and why the Ultimate Guide to NHIs — What are Non-Human Identities separates these identities from human users.

The risk is not theoretical. NHI Mgmt Group research shows that only 5.7% of organisations have full visibility into their service accounts, which makes standard user-centric controls incomplete for most environments. NIST’s NIST Cybersecurity Framework 2.0 also emphasises asset visibility, access control, and continuous risk management, all of which are harder when service accounts are unmanaged or over-permissioned. In practice, many security teams encounter service-account misuse only after a credential leak, failed offboarding, or lateral movement has already occurred, rather than through intentional review.

How It Works in Practice

The practical answer is to govern service accounts as NHIs with ownership, purpose, rotation, and monitoring tied to the workload they support. That means each account should have a named business or technical owner, a documented use case, a clear dependency map, and an expiry or review date. For credentials, current guidance suggests moving away from long-lived static secrets toward short-lived, JIT-issued credentials where the platform supports it. For background jobs, APIs, and integrations, this usually means cryptographic workload identity plus policy enforcement at request time, not just a login pattern borrowed from human IAM.

Operationally, teams should validate four things: first, the service account is tied to a real workload; second, access is scoped to the minimum required systems and data; third, secrets are stored in a managed vault rather than code or config; and fourth, rotation and offboarding are automated enough to survive personnel changes. The Ultimate Guide to NHIs — Standards is useful here because it frames lifecycle control, visibility, and rotation as core requirements rather than optional hygiene. For implementation patterns, 52 NHI Breaches Analysis shows how weak governance, stale credentials, and poor scoping repeatedly show up in real incidents. The best practice is evolving toward intent-based authorisation and policy-as-code, but there is no universal standard for this yet.

• Assign an owner and a purpose for every service account.
• Use JIT or short-lived credentials where possible.
• Rotate and revoke secrets automatically, not on an ad hoc schedule.
• Review entitlements against actual workload behaviour, not human job roles.
• Log and alert on unusual privilege use, tool chaining, and failed auth patterns.

These controls tend to break down in legacy systems that cannot support workload identity, short token lifetimes, or automated secret rotation.

Common Variations and Edge Cases

Tighter service-account control often increases operational overhead, requiring organisations to balance reduced blast radius against deployment speed and system compatibility. That tradeoff is real in batch jobs, mainframe integrations, and vendor-managed applications where rotating secrets or introducing JIT access can interrupt service. In those cases, best practice is evolving rather than settled: compensating controls such as vaulting, scoped network access, stronger monitoring, and periodic re-certification may be the only viable path.

One common exception is shared platform service accounts, where multiple jobs or teams rely on the same identity. Those accounts should be treated as higher-risk NHIs because attribution becomes weaker and privilege creep becomes more likely. Another edge case is cloud-native automation, where workload identity can replace static credentials entirely; that is usually preferable, but it still needs policy boundaries and auditability. The Dropbox Sign breach is a reminder that secrets exposure can turn one account into a broad compromise path, and that user-style controls alone do not reduce that risk. For teams wanting a breach-focused reference point, the Internet Archive breach illustrates how identity and access failures quickly become service and data governance failures. Organisations should therefore treat service accounts as distinct operational assets, not as employee proxies with a different username format.

Related resources from NHI Mgmt Group

• When do service accounts become a higher risk than ordinary user accounts?
• When should organisations treat an NHI as a high-priority risk?
• What problem does ownership attribution solve for service accounts and API keys?
• How should security teams govern Active Directory service accounts?