Accountability is shared, but it must be explicit. The owning organization for each application should approve access, define the role policy, and remove access when it is no longer needed. Sponsors, CROs, and sites all have governance obligations, yet no one should rely on informal coordination. A clear approval trail and complete access record are essential for compliance and audit readiness.
Why This Matters for Security Teams
In sponsor, CRO, and site collaborations, access control is not a single-owner problem, but it is never a no-owner problem. The practical risk is that each party assumes another party approved the account, the role, or the removal step. That gap is where overprivilege, orphaned access, and audit failure usually begin. Guidance from OWASP Non-Human Identity Top 10 and Ultimate Guide to NHIs both points to the same operational truth: credentials and permissions must be owned, reviewed, and revoked with a clear chain of accountability.
This matters most where regulated data, clinical workflows, and third-party tooling intersect. A CRO may administer a study platform, a sponsor may define the business need, and a site may provision end users, but the application owner still needs explicit approval authority and a documented access model. NHI Management Group notes that only 20% of organisations have formal processes for offboarding and revoking API keys, which is a warning sign for any collaboration model that relies on handoffs instead of enforcement. In practice, many security teams discover that access governance was shared informally only after an audit finds a stale account or a contractor still active long after the engagement ended.
How It Works in Practice
Effective collaboration access control starts with assigning three separate responsibilities: who requests access, who approves it, and who removes it. Current guidance suggests the owning organization for the application should approve the access policy, even if a CRO or site performs administration on behalf of the study. That is because approval without ownership quickly becomes a compliance blind spot. The same principle applies to non-human identities and service accounts, which are covered in both the Ultimate Guide to NHIs -- Key Challenges and Risks and the NIST SP 800-53 Rev 5 Security and Privacy Controls model for access enforcement.
A practical operating model usually includes:
- A named application owner at the sponsor for business approval.
- A CRO or site admin who executes provisioning only within approved scope.
- Role definitions tied to job function, study role, or system function, not personal preference.
- Time-bound access reviews with removal tracked to closure.
- Evidence of approval, renewal, and deprovisioning retained for audit.
For third-party and shared environments, the control objective is not just least privilege but provable ownership. That means every account should map to a person or workload, every role should map to an approved need, and every exception should have an expiry. This is especially important where secrets are embedded in tooling, because collaboration workflows often expose credentials in tickets, chats, or code. The research in The State of Secrets Sprawl 2025 shows that 38% of secrets incidents in collaboration and project management tools are classified as highly critical or urgent, which makes ownership discipline a direct security control, not just an administrative one.
These controls tend to break down when a study spans multiple vendors with different identity systems, because no single party can see the full lifecycle of access without a shared record.
Common Variations and Edge Cases
Tighter approval chains often increase turnaround time, so organisations have to balance speed against the risk of uncontrolled access. That tradeoff is especially visible during study startup, emergency support, and site onboarding, where teams are tempted to grant temporary broad access and sort out the paperwork later. Best practice is evolving, but the direction is clear: temporary access should still have an owner, a purpose, and an expiry.
There are a few common edge cases. If the sponsor owns the platform but the CRO operates it, the sponsor still retains accountability for the authorization model while the CRO may hold delegated administration rights. If the site manages local users in a shared portal, site leadership may approve local access, but the application owner should still define the role catalog and review cadence. If a vendor integrates automation or service accounts, those identities need the same clarity as human users, especially because they often bypass normal help desk workflows.
Controls are strongest when they align with CIS Controls v8 for access management and with Ultimate Guide to NHIs -- Standards for lifecycle governance. In practice, the most common failure is not malicious sharing but ambiguous delegation, where everyone believes someone else owns the approval and no one owns the revocation.
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 surface, NIST CSF 2.0, NIST SP 800-53 Rev 5 and ISO27001 set the technical controls, and NIS2 define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Shared access ownership is a core NHI governance failure mode. |
| NIST CSF 2.0 | PR.AC-1 | Identity and credential management requires clear access accountability. |
| NIST SP 800-53 Rev 5 | AC-2 | Account management controls are directly implicated in shared sponsor-CRO-site access. |
| NIS2 | Third-party access governance supports supply-chain accountability expectations. | |
| ISO27001 | A.5.15 | Access control policies must be defined and enforced across collaborating parties. |
Assign explicit owners for every non-human identity and review delegated access on a fixed cadence.
Related resources from NHI Mgmt Group
- Who is accountable for secret rotation and access governance in OpenTofu deployments?
- Who is accountable when rejected healthcare access is not removed on time?
- Who is accountable when runtime access is over-provisioned or not revoked on time?
- Who is accountable when a weak login design allows access to multiple systems through one compromised identity?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on August 27, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
