A service interaction initiated or carried out by one actor on behalf of another. In AI support scenarios, this can mean an agent contacting support for a user, which shifts governance from conversational design to authentication, authorization, and auditability.
What Delegated Interaction Means in Practice
Delegated interaction is the pattern where one actor performs a service action on behalf of another, so the real governance question becomes who is acting, under what authority, and how that delegation is recorded.
This is common in support workflows, administrative operations, and agent-assisted experiences. The important distinction is that the actor initiating the request may not be the person whose account, data, or business context is being affected, which creates a separate trust and accountability boundary.
Why Delegation Changes the Security Model
Once interaction is delegated, the core security issue shifts from the visible conversation or request to the legitimacy of the delegated authority. Systems have to distinguish the delegate, the principal, and any approved scope of action, especially when the request can create, change, or reveal sensitive state.
That makes delegated interaction closely tied to authentication, authorization, and auditability. A system that can identify the delegate but cannot prove the principal’s consent or the allowed scope is still exposed to misuse, impersonation, and ambiguous accountability.
Common Delegated Interaction Patterns
Delegated interaction appears in several forms: a support agent resetting access for a customer, an assistant submitting a request for a user, or a service calling another service with borrowed authority. Each pattern changes who must be trusted and what evidence of permission must be retained.
The more sensitive the action, the more important it is to separate “who initiated the request” from “whose interests are being served.” That separation is what prevents delegated convenience from becoming uncontrolled proxy access.
What Makes Delegated Interaction Hard to Govern
Delegation is easy to describe but harder to govern because the same interaction can be legitimate in one context and abusive in another. The control problem is not the existence of a proxy action, but whether the proxy has bounded authority, whether the principal is known, and whether the system can reconstruct the chain of responsibility later.
In practice, weak delegation design often shows up as overbroad permissions, vague approval rules, or logs that capture the action but not the authority behind it. A clear delegation model should preserve traceability without forcing every delegated action to look identical to direct user action.
Risk and Threat Considerations
Delegated interaction can become a security weakness when the proxy relationship is too broad, poorly verified, or difficult to audit. The main risk is that an attacker or insider can exploit delegation to act with borrowed legitimacy while the system records only a seemingly normal service action.
Failure mechanism: The delegate is authenticated, but the principal, scope, or consent is not strongly bound to the action, allowing unauthorized requests to pass as valid delegation.
Impact: Sensitive changes, data exposure, or account actions may be attributed to the wrong actor, which weakens fraud detection, incident reconstruction, and accountability.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5 provides the primary governance reference for this term.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | AC-3 — Access Enforcement | Delegated interaction depends on enforcing who may act on another's behalf. |
| IA-2 — Identification and Authentication (Organizational Users) | Delegated actions still require reliable identity proof for the acting user or service. | |
| AU-2 — Event Logging | Delegation must be auditable so the proxy chain and action context are reconstructable. | |
| Recommendation — Enforce explicit delegated-authority rules for each action and principal pair. Authenticate the delegate before permitting any proxy action. Log the delegate, principal, scope, and outcome for every delegated action. | ||
Practitioner Guidance
Governance implication: Treat delegated interaction as a first-class authorization pattern, not a UI convenience. The delegated actor, the principal, and the approved action scope should all be explicit in policy and in the audit trail.
Practitioner note: If the business process cannot explain who is allowed to act for whom, and for which actions, the delegation model is already too implicit for secure operation.