Siri — agentic threat model
Siri presents a moderate-to-high agentic risk profile due to its deep integration with personal device data, smart home controls, and external LLMs like ChatGPT, which increases the attack surface for prompt injection and unauthorized tool execution.
OWASP AIVSS score rationale
| Autonomy of Action | 0.40 | |
| Goal-Driven Planning | 0.30 | |
| Self-Modification | 0.10 | |
| Dynamic Tool Use | 0.60 | |
| Persistent Memory | 0.50 | |
| Contextual Awareness | 0.80 | |
| Dynamic Identity | 0.20 | |
| Multi-Agent Interactions | 0.40 | |
| Non-Determinism | 0.50 | |
| Opacity & Reflexivity | 0.60 |
Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.
MAESTRO 7-layer threat model
Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.
Siri utilizes Apple's proprietary foundation models alongside external integrations like ChatGPT. Primary threats include adversarial prompt injection (voice or text) and misaligned or hallucinated outputs from the integrated third-party models.
Siri processes highly sensitive personal data, including messages, calls, reminders, and smart home states. Threats include data exfiltration of personal context and indirect prompt injection via incoming messages or emails.
The orchestration framework translates natural language into system actions (e.g., sending texts, controlling IoT devices). Threats include unauthorized tool execution, voice-command hijacking, and insecure handling of external API handoffs.
Not certain from the listing — The deployment infrastructure (on-device sandboxing vs. Private Cloud Compute) is not detailed in the listing, but vulnerabilities could lead to local privilege escalation or unauthorized device control.
Not certain from the listing — The evaluation, logging, and guardrail mechanisms are not specified in the listing, raising potential concerns about prompt injection detection and monitoring of external model (ChatGPT) handoffs.
Not certain from the listing — Specific compliance standards (like ISO or SOC2) or identity/authorization policies for third-party integrations are not detailed, though local device authentication (FaceID/TouchID) is standard for Apple ecosystems.
Not certain from the listing — While Siri integrates with ChatGPT, the exact multi-agent orchestration, trust boundaries, and cascading failure protections between Apple's models and OpenAI are not fully described.
MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).
These scores are auto-generated from public information (the agent's own listing, docs, and repository) using the canonical OWASP AIVSS formula and the MAESTRO framework — an estimate for guidance, not a penetration test, audit, or certification. See the scoring methodology. Are you the vendor? Factual corrections are free.