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Biel.ai — agentic threat model

6.8AIVSS 6.8 · Medium

Biel.ai is a low-autonomy, RAG-focused documentation assistant whose primary security risks lie in knowledge-base poisoning of its connected documentation sources and potential data exfiltration of sensitive internal wikis via prompt injection.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 6.1AARS uplift 1.01Factor sum 2.6/10Threat ×1.0Mitigation ×0.95
Autonomy of Action
0.20
Goal-Driven Planning
0.10
Self-Modification
0.00
Dynamic Tool Use
0.30
Persistent Memory
0.20
Contextual Awareness
0.50
Dynamic Identity
0.10
Multi-Agent Interactions
0.30
Non-Determinism
0.40
Opacity & Reflexivity
0.50

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.

L1 · Foundation Models⚠ not certain from listing

Not certain from the listing — likely relies on commercial third-party LLMs via API, exposing the system to standard foundation model threats like prompt injection, adversarial examples, and potential data leakage if inputs are used for model training.

L2 · Data Operations✓ mapped

Indexes external documentation sources including Confluence, Docusaurus, and Sphinx. This makes the agent highly vulnerable to RAG/knowledge-base poisoning if an attacker can modify the source documentation, leading to the AI serving malicious instructions or false information.

L3 · Agent Frameworks✓ mapped

Uses Model Context Protocol (MCP) and API integrations for RAG as a service. Risks include insecure tool integration, prompt injection bypassing system instructions, and potential tool misuse if MCP servers are not properly sandboxed.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — as a closed-source SaaS with an embeddable widget, infrastructure security relies entirely on the vendor's hosting environment. Risks include widget-based XSS, unauthorized API access, and lack of tenant isolation in the vector database.

L5 · Evaluation & Observability✓ mapped

Provides real-time analytics and content gap insights. However, it is unclear if there are active guardrails or automated evaluations to detect adversarial prompt injections or hallucinated outputs in real-time.

L6 · Security & Compliance (cross-cutting)⚠ not certain from listing

Not certain from the listing — claims 'enterprise-grade security' but lacks specific compliance certifications (e.g., SOC 2, ISO 27001) or detailed access control mechanisms in the public description.

L7 · Agent Ecosystem✓ mapped

Supports Model Context Protocol (MCP) and API integrations, allowing it to act as a RAG service for other agents. This introduces risks of cascading failures or trust abuse if downstream agents consume poisoned documentation outputs.

MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).