A connector that extracts data from a source system without changing it. For identity governance, read-only mode is the safest way to centralise access information first, then decide later whether controlled provisioning or revocation should be enabled.
Expanded Definition
A read-only connector is an integration pattern that can discover, query, and inventory source-system data without writing back changes. In NHI governance, that usually means it can enumerate service accounts, tokens, roles, groups, and ownership metadata while blocking provisioning, deprovisioning, password rotation, and entitlement changes. That separation is important because connectors often start as data-collection tools, then become trust anchors for broader identity workflows.
The distinction matters: a true read-only connector reduces operational blast radius, while a misconfigured connector with hidden write scope can alter permissions or revoke access without the governance team realising it. Definitions vary across vendors on whether “read-only” refers to API permissions, application behaviour, or both, so implementation reviews should verify actual call patterns rather than rely on labels alone. For governance mapping, the connector should align to visibility and assessment use cases first, then expand only if explicit control paths exist. The most common misapplication is treating a connector as read-only because it is used for reporting, when the underlying credential still has write privileges in the source system.
For identity control baselines, NIST Cybersecurity Framework 2.0 is useful for framing how inventory, access, and monitoring support broader governance objectives.
Examples and Use Cases
Implementing a read-only connector rigorously often introduces a coverage tradeoff, requiring organisations to weigh safer inventory access against the slower path to automated remediation.
- Pulling service-account lists from cloud directories so teams can compare them against the inventory described in the Ultimate Guide to NHIs before enabling any lifecycle automation.
- Scanning CI/CD platforms for embedded credentials and ownership data, then forwarding findings to a governance dashboard without granting the connector permission to edit pipelines or rotate secrets.
- Connecting to SaaS directories in discovery mode to identify orphaned NHIs, excessive roles, and stale tokens while preserving the source-of-truth system unchanged.
- Validating least-privilege posture by comparing actual entitlements against policy, using the governance and visibility lens recommended in the NIST Cybersecurity Framework 2.0.
- Building an initial NHI discovery phase for mergers, audits, or incident response, when the goal is to map exposure before any corrective actions are authorised.
Used well, the pattern creates a safe on-ramp: teams can collect facts first, prove what exists, and only later decide whether controlled provisioning or revocation should be introduced. Where no single standard governs connector semantics yet, the operational question is always whether the integration can truly avoid state change in the source system.
Why It Matters in NHI Security
Read-only connectors are often the boundary between visibility and unintended change. When an organisation is trying to understand NHI sprawl, a connector that can only observe helps preserve evidence, reduce outage risk, and keep discovery separate from enforcement. That separation is especially important in environments with many third-party connections, because NHIs are frequently overprivileged and poorly inventoried. NHI Mgmt Group reports that only 5.7% of organisations have full visibility into their service accounts, which means most teams are still working from partial data rather than a trustworthy inventory.
The security value is not just technical, it is governance related. A read-only model supports safer audits, cleaner incident reconstruction, and more defensible change control when teams are still mapping who owns what. It also fits the wider Zero Trust direction reflected in the Ultimate Guide to NHIs, where discovery and least privilege come before automated trust extension. Organisations also use this approach to avoid accidental privilege changes during consolidation, especially when multiple systems disagree on ownership or entitlement state.
Organisations typically encounter the need for a read-only connector only after an audit, breach review, or failed provisioning attempt makes uncontrolled write access 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-01 | Discovery connectors support NHI inventory and visibility controls. |
| NIST CSF 2.0 | ID.AM-1 | Asset inventory relies on safe collection of identity data from source systems. |
| NIST Zero Trust (SP 800-207) | PR.AA | Zero Trust requires verified access paths without unnecessary write authority. |
Limit connectors to observed data access unless explicit change authority is required and approved.
Related resources from NHI Mgmt Group
- Should organisations use connector-less deployment for on-prem DSPM where possible?
- Why do read-only AI agents still create serious security risk?
- What do security teams get wrong about connector credentials in infrastructure automation?
- What breaks when AI coding agents can read project setup metadata?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 8, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
