A delegated software identity is a non-human actor that operates with permissions or influence granted through installation, configuration, or ownership rather than a traditional login. For browser extensions, the important issue is not only whether the code is signed, but whether its runtime authority can be changed after approval.
Expanded Definition
Delegated software identity describes software that gains authority because an organisation installs it, assigns it ownership, or configures it to act on behalf of a user, device, or system. In NHI governance, the key question is not just whether the component is trusted at install time, but whether its runtime authority can change without a fresh approval cycle. That makes browser extensions, endpoint agents, workflow automations, and certain plug-ins especially sensitive because their effective permissions can expand after deployment.
This concept overlaps with application trust, software supply chain controls, and NHI governance, but it is not the same as a human user account or a static signed artifact. Industry usage is still evolving, so definitions vary across vendors and security teams. NHI Management Group treats delegated software identity as a governance problem: who granted the authority, what actions can the software take, and what conditions can widen that authority later. NIST’s NIST Cybersecurity Framework 2.0 is useful here because it frames identity, access, and continuous oversight as operational responsibilities rather than one-time approvals. The most common misapplication is assuming code signing alone proves safe authority, which occurs when runtime permissions are treated as immutable after installation.
Examples and Use Cases
Implementing delegated software identity rigorously often introduces review overhead, requiring organisations to weigh deployment speed against the risk of silently expanding authority after approval.
- A browser extension is approved for read-only access to a web app, then a later update requests clipboard, tab, and session access. The issue is not just the new code, but the delegated authority already granted to the extension runtime. This pattern is discussed in NHI research such as JetBrains GitHub plugin token exposure.
- A CI/CD helper service is installed with limited scope, but the owning pipeline role later inherits broader secrets access. The delegated identity changes because the surrounding workflow context changed, not because a human reauthenticated.
- An enterprise agent is granted access to tickets and repositories to automate triage, then receives additional tool permissions after a platform upgrade. That shift should be treated as a new authorization event, not a routine patch.
- A SaaS integration is installed under an admin-owned tenant account, giving the integration authority that persists even when the original approver leaves the company. This is a common lifecycle gap in delegated software identity management.
For broader pattern recognition, the Ultimate Guide to NHIs and the Top 10 NHI Issues show how over-privilege, poor visibility, and weak offboarding repeatedly turn delegated access into a control failure. Browser extensions are a good example because their practical risk is often tied to what they can do after approval, not what their store listing promised at install time.
Why It Matters in NHI Security
Delegated software identity matters because it creates a durable control surface that can outlive the review that authorised it. When runtime authority is mutable, an approved tool can become a privilege escalation path, a data exfiltration path, or a lateral-movement path without any new login event. That is exactly why NHI governance has to focus on installation context, ownership, update channels, and post-approval permission drift.
This is not theoretical. NHI Management Group reports that 97% of NHIs carry excessive privileges, and that 80% of identity breaches involved compromised non-human identities such as service accounts and API keys. Those figures underscore how often organisations trust software identities more than they can monitor them. The risk becomes sharper when delegated software can interact with secrets, browser sessions, repositories, or production APIs. The 52 NHI Breaches Analysis is a strong reminder that identity compromise often starts with an assumption that “approved once” means “safe forever.” Organisations typically encounter this consequence only after an extension, agent, or integration has already been abused, at which point delegated software identity 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-02 | Covers secret and privilege abuse in non-human identities. |
| NIST CSF 2.0 | PR.AC-4 | Addresses access permissions and least-privilege governance. |
| NIST Zero Trust (SP 800-207) | JIT | Supports dynamic, context-based authorization for machine actors. |
Grant delegated software only time-bound, context-specific access and reassess on each change.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on June 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
