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Cisco's Foundry Security Harness Specification Released

Cisco's Foundry Security Harness Specification Released

First seen 2 Nov 2026, 17:13 UTC •

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ThreatCluster AI
ThreatCluster •November 2, 2026 at 19:47 UTC
  • •Cisco released the Foundry security harness specification for evaluating LLMs.
  • •The specification allows for organization-neutral implementation and governance.
  • •A proof of concept demonstrates the specification against real-world targets.

Cisco's Advanced Security Initiatives Group has released the Foundry security harness specification, which serves as a framework for evaluating large language models (LLMs) against security standards. The specification is designed to be organization-neutral and allows users to build their own implementations based on the architecture and guardrails provided. The Foundry system utilizes CodeGuard rules for detection, which Cisco has previously open-sourced. A proof of concept repository has also been created by a user, demonstrating the specification against several real targets, including Langflow and MLflow. This implementation aims to enhance governance and repeatability in security processes, producing verifiable and auditable outputs from LLMs. The Foundry specification is intended to help organizations improve their security posture without altering the underlying models.

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Timeline

2026-11-02
Foundry security harness specification released
Cisco's Advanced Security Initiatives Group published the Foundry specification to aid in LLM security evaluations.
github.com
2026-11-02
Proof of concept repository created
A user implemented the Foundry specification in a repository, demonstrating its application against multiple targets.
github.com

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Common questions

What is the Foundry security harness specification?
It is a framework developed by Cisco for evaluating large language models against security standards.
How does Foundry improve security processes?
Foundry enhances governance and repeatability, producing verifiable outputs from LLMs without changing the models.
What are the key components of the Foundry specification?
The specification includes architecture, guardrails, and the use of CodeGuard detection rules.