Credential Reuse
Reuse harvested credentials to access additional services and agents
Lateral Movement · Stage 5
Pivot from compromised agent to connected services or other agents
RETROACTIVE-PRIV
Exploiting previously granted access or cached credentials to gain unauthorized capabilities
Confirmed in real-world production systems or internet-wide exposure assessments.
credential reuse
Reproductions in Damn Vulnerable AI Agent, the OpenA2A intentionally-broken agent for kill-chain validation.
AgentPwn coverage
Not observable via content-side honeypot interaction. HackMyAgent or DVAA cover this where applicable.
Reusing harvested credentials against a second system is not something a content honeypot can stage.
Evidence by source
Evidence timeline
HMA check CRED-001 failed on singlefile-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on soc-demo
HMA check CRED-001 failed on opena2a-cli
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
HMA check CRED-001 failed on cred-test
Detection · HackMyAgent
npx hackmyagent secure --ciLive = implemented in hackmyagent; queued = declaredDefense · OASB controls
How to cite
AI Agent Threat Matrix T-5004 (Credential Reuse). OpenA2A, 2026. https://threats.opena2a.org/techniques/T-5004