An approach that relies on restriction, blocking, or denial to stop users from using applications the organisation does not want. It is typically implemented through network or access controls and often creates a reactive security posture when employees bypass those controls or look for unofficial workarounds.
Expanded Definition
Enforcement-based security is a control strategy that tries to stop unwanted use by denying access, blocking traffic, or preventing execution rather than shaping safer usage through policy design. In NHI and IAM contexts, it usually appears as network filtering, application deny lists, conditional access gates, or endpoint restrictions that are intended to keep employees, agents, or services away from tools and workflows the organisation has not approved.
That approach can be useful for immediate containment, but it is not the same as a mature governance model. Guidance from NIST Cybersecurity Framework 2.0 and Zero Trust thinking generally pushes organisations toward verified access, identity-based policy, and continuous enforcement rather than simple prohibition. In practice, definitions vary across vendors because some products call any blocked action “enforcement,” even when the underlying issue is weak policy design or poor visibility.
The most common misapplication is assuming that blocked access equals secure control, which occurs when users, service accounts, or AI agents can still reach the same capability through unofficial tools, shadow IT, or alternate credentials.
Examples and Use Cases
Implementing enforcement-based security rigorously often introduces friction for legitimate users, requiring organisations to weigh immediate reduction in risky activity against the operational cost of exceptions, workarounds, and support burden.
- A company blocks access to unsanctioned file-sharing apps from corporate endpoints, but employees route around the block using personal devices or browser-based proxies.
- An NHI program denies outbound connections from service accounts except to approved APIs, reducing exposure while increasing the need for explicit allow-list maintenance.
- A security team prevents execution of unapproved scripts on managed hosts, which helps contain abuse but can also interrupt automation if the asset inventory is incomplete.
- An organisation restricts access to sensitive internal systems unless a human or agent presents strong identity context, aligning enforcement with Zero Trust principles rather than blanket denial.
- After repeated misuse, teams review control gaps exposed by incidents such as the ASP.NET machine keys RCE attack and Gladinet Hard-Coded Keys RCE Exploitation, where hard stops were absent or ineffective.
These controls are often paired with policies from the NIST Cybersecurity Framework 2.0, especially where the organisation wants to reduce exposure quickly before deeper identity redesign is complete.
Why It Matters in NHI Security
Enforcement-based security matters because NHI environments fail differently from traditional user environments: service accounts, API keys, certificates, and agent privileges are often embedded in automation, making simple blocking brittle and easy to bypass. When enforcement is used without asset visibility, teams may block legitimate workflows while missing the real problem, such as excessive privilege, stale secrets, or untracked third-party access.
NHIMG research shows that only 5.7% of organisations have full visibility into their service accounts, which means enforcement often acts on incomplete information. The same body of research shows that 97% of NHIs carry excessive privileges and 79% of organisations have experienced secrets leaks, so denial controls alone do not remove the underlying blast radius. In other words, enforcement can delay misuse, but it does not replace lifecycle control, rotation, or least privilege.
Organisations typically encounter the limits of enforcement-based security only after a blocked workflow is bypassed or an incident reveals hidden credentials, at which point the control model becomes operationally unavoidable to address.
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 address the attack and risk surface, while NIST CSF 2.0 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC-4 | Access enforcement must support least-privilege and controlled permission use. |
| NIST Zero Trust (SP 800-207) | Policy Engine | Zero Trust relies on explicit policy decisions instead of blanket network trust. |
| OWASP Non-Human Identity Top 10 | NHI-01 | Overreliance on blocking often masks weak NHI visibility and privilege governance. |
Pair enforcement with inventory, privilege review, and secret rotation controls for non-human identities.
Related resources from NHI Mgmt Group
- How should security teams govern browser-based policy enforcement for identity and data risk?
- What breaks when security teams rely on file-based policy enforcement for derivative or transformed data?
- What is the difference between enforcement-based and enrollment-based application security?
- What is the difference between role-based access and API key governance for NHI security?
