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← Coval (YC S24)

Coval (YC S24) — agentic threat model

8.5AIVSS 8.5 · High

Coval acts as a high-leverage testing and simulation harness integrated into development pipelines; while its direct operational autonomy is low, a compromise could allow attackers to manipulate evaluation metrics, poison test suites, or pivot into connected agent environments and CI/CD pipelines.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 7.5AARS uplift 1.0Factor sum 4.0/10Threat ×1.0Mitigation ×1.0
Autonomy of Action
0.40
Goal-Driven Planning
0.50
Self-Modification
0.10
Dynamic Tool Use
0.40
Persistent Memory
0.30
Contextual Awareness
0.50
Dynamic Identity
0.10
Multi-Agent Interactions
0.70
Non-Determinism
0.60
Opacity & Reflexivity
0.40

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 — Coval likely utilizes foundation models to generate simulated user personas and evaluate agent responses. Threats include adversarial prompt injection during simulation and model misalignment leading to false validation results.

L2 · Data Operations⚠ not certain from listing

Not certain from the listing — The platform manages test datasets, interaction logs, and evaluation gold standards. Risks include test data poisoning, which could mask agent vulnerabilities, and the exfiltration of proprietary interaction logs.

L3 · Agent Frameworks✓ mapped

Coval orchestrates automated simulations across chat and voice modalities. Vulnerabilities in its orchestration framework could allow simulated agents to break out of the test harness or execute unauthorized actions via insecure tool integrations.

L4 · Deployment & Infrastructure⚠ not certain from listing

Not certain from the listing — As a SaaS platform integrating with continuous integration (CI) pipelines, infrastructure threats include the exposure of API keys, insecure webhook endpoints, and lateral movement from compromised test environments into production systems.

L5 · Evaluation & Observability✓ mapped

As an evaluation and observability platform, Coval's core risk is evaluation gaming, where target agents are optimized to pass specific statistical validations while remaining unsafe in production, alongside potential blind spots in edge case detection.

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

Not certain from the listing — No specific compliance frameworks (e.g., SOC2, ISO 27001) or fine-grained access control mechanisms are detailed in the public directory listing.

L7 · Agent Ecosystem✓ mapped

Coval operates directly within an agent ecosystem by simulating user-to-agent and agent-to-agent interactions. Threats include cascading failures during multi-agent testing and trust abuse between the simulation harness and the target agents.

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