LLM09: Misinformation
Hallucinated, biased, or stale model responses presented as authoritative output.
Last reviewed June 2026
The gap LLM09 closes
Misinformation sits in the reliability surface, and OWASP LLM Top 10 rates it medium. Hallucinated, biased, or stale model responses presented as authoritative output. For teams shipping LLM and agentic features, a control like this is only as good as the evidence that it was actually tested - an unverified control is a finding waiting for an auditor.
How Penaxtra delivers LLM09
Penaxtra ships adversarial probe families that target misinformation directly. Each probe runs against your live endpoint on a schedule, and every triggering response is scored by three independent judges plus a meta-judge before it becomes a finding - so a LLM09 result is a tested verdict, not a guess. Every relevant finding is created with the OWASP LLM Top 10 LLM09 identifier already attached, so it lands in the audit-evidence pack mapped to the control rather than as a screenshot someone has to translate later. Where the same weakness touches another framework, the cross-framework overlap means one finding satisfies several control cells at once.
LLM09 capabilities
Findings tagged with the OWASP LLM Top 10 LLM09 control identifier
Severity context (OWASP LLM Top 10 rates this medium)
Cross-framework overlap so one finding maps to several control cells
PDF and JSON audit-evidence export with the control id attached
LLM09 compliance mapping
Findings for LLM09 carry the OWASP LLM Top 10 LLM09 identifier and cross-map to the related controls in the other five frameworks Penaxtra covers.
Frequently asked
What is LLM09 (Misinformation)?
Hallucinated, biased, or stale model responses presented as authoritative output. It is part of OWASP LLM Top 10, rated medium.
How does Penaxtra test for LLM09?
Penaxtra ships adversarial probe families that target misinformation directly. Each probe runs against your live endpoint on a schedule, and every triggering response is scored by three independent judges plus a meta-judge before it becomes a finding - so a LLM09 result is a tested verdict, not a guess.
Does a finding for LLM09 help with an audit?
Yes. Each finding is tagged with the OWASP LLM Top 10 LLM09 control identifier and exported in the PDF and JSON evidence pack, so it maps straight onto the auditor control list instead of needing manual translation.
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