Read-only access allows a machine or agent to inspect data or systems without changing them. In AI-assisted development, it is a practical least-privilege default because it lets teams validate behaviour and gather context while reducing the chance of unintended modification or privilege escalation.
Expanded Definition
Read-only access is an entitlement that lets a machine, workload, or AI agent inspect data, metadata, logs, or configuration without making changes. In NHI programs, it is a common least-privilege starting point because it limits the blast radius of automation while preserving observability and troubleshooting capability. Guidance varies across vendors on how “read-only” should be enforced, because a control may be read-only at one layer while still enabling indirect actions through a downstream tool or API.
That distinction matters in agentic systems, where an agent may appear harmless because it cannot write directly, yet still trigger side effects through search, export, queue, or orchestration functions. The practical benchmark is whether the identity can only retrieve information, or whether it can also cause state changes by invoking adjacent services. The OWASP OWASP Non-Human Identity Top 10 treats privilege scope as a core control problem, and that framing is highly relevant here. The most common misapplication is granting “read-only” labels to identities that can still export, approve, or execute actions through connected tooling when the integration path is not reviewed.
Examples and Use Cases
Implementing read-only access rigorously often introduces workflow friction, because teams must separate inspection tasks from operational tasks and sometimes duplicate identities for different job functions.
- A CI pipeline uses a read-only service account to fetch dependency manifests and compare configurations before a deployment gate is opened.
- An AI coding assistant is allowed to inspect repository structure and issue trackers, but cannot merge code, change secrets, or modify branch protections.
- A security analyst receives read-only access to production logs and cloud inventory so they can investigate incidents without touching live resources.
- A support agent can view customer records and audit history, but cannot alter billing, entitlements, or identity profiles.
- A compliance scanner uses read-only access to enumerate permissions and detect overprivileged NHIs, then reports findings for manual approval.
For governance context, the Ultimate Guide to NHIs and 52 NHI Breaches Analysis show how excessive access and poor entitlement hygiene amplify risk across service accounts and API keys. In standards-oriented programs, read-only scopes are often mapped to the control intent of least privilege in OWASP Non-Human Identity Top 10. Because the control is only as strong as the weakest downstream integration, teams should verify that “view” permissions do not unlock hidden write paths through export jobs, callbacks, or delegated actions.
Why It Matters in NHI Security
Read-only access is one of the most important guardrails for reducing the impact of compromised secrets, misconfigured vault entries, and overbroad machine identities. NHI Mgmt Group reports that 97% of NHIs carry excessive privileges, which shows how often organisations fail to constrain machine access to the minimum necessary scope. That matters because a stolen token with read-only intent may still expose sensitive data, internal architecture, API schemas, or prompt material that enables follow-on abuse. The risk is amplified in AI-assisted environments where agents can synthesize leaked context into new attack paths.
Read-only access also supports Zero Trust by narrowing trust assumptions and forcing explicit authorization for every action path. The practitioner challenge is not only assigning read-only roles, but proving they remain read-only across federated systems, plugins, and delegated service chains. Organisations typically encounter the real cost after a token leak, a log review, or an incident response exercise reveals that supposedly view-only access was enough to extract high-value data, at which point read-only access 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 |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-04 | Least-privilege and scope limitation are core NHI control themes. |
| NIST CSF 2.0 | PR.AC-4 | Access permissions should enforce least privilege and access control. |
| NIST Zero Trust (SP 800-207) | Zero Trust requires explicit authorization and narrow access for every action path. |
Treat read-only as the default and require separate authorization for any write-capable action.
