T-1006ObservedActive
Agent Card Discovery
Discover A2A agent cards to map agent identities, capabilities, and trust relationships
Tactic
Reconnaissance · Stage 1
Map the target agent's attack surface, capabilities, and behavioral boundaries
Attack class
AGENT-IMPERSONATE
Impersonating trusted agents or administrative roles to gain unauthorized access
Evidence grade
ObservedConfirmed in real-world production systems or internet-wide exposure assessments.
DVAA validation
Orchestrator /a2a/agent-card
Reproductions in Damn Vulnerable AI Agent, the OpenA2A intentionally-broken agent for kill-chain validation.
Honeypot
AgentPwn coverage
In scope for honeypot observation; trap page or telemetry hook not yet built.
A2A agent-card discovery needs the fake-agent network at /pwnagent, which is queued.
Detect
Detection · HackMyAgent
A2A-001A2A-002
npx hackmyagent secure --ciLive = implemented in hackmyagent; queued = declaredDefend
Defense · OASB controls
Reference
How to cite
AI Agent Threat Matrix T-1006 (Agent Card Discovery). OpenA2A, 2026. https://threats.opena2a.org/techniques/T-1006