Best AI Security Testing Tools 2026: Red Teaming and LLM Vulnerability Scanners Compared

A practitioner's comparison of the best AI security testing tools in 2026 — open-source scanners, commercial red-teaming platforms, and how to match each

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Isometric control panel mapping a mitigation to each of the ten 2025 OWASP LLM risk categories

LLM Security

OWASP LLM Top 10 Mitigation Guide: Controls for Every Risk Category (2025 Edition)

A practitioner's OWASP LLM Top 10 mitigation guide covering all ten 2025 risk categories — prompt injection t…

Isometric evaluation pipeline running Patronus Lynx hallucination scoring and Glider custom safety evaluators on LLM outputs

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Patronus AI Review: Automated LLM Evaluation and Guardrails

A review of Patronus AI's evaluation platform — the Lynx hallucination model, the Glider custom evaluator, th…

A terminal scanning machine-learning model files

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Protect AI's ModelScan and NB Defense: Open-Source AI Supply-Chain Scanning

A hands-on review of Protect AI's two best-known open-source tools — ModelScan for model serialization attack…

An enterprise AI security platform dashboard

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Robust Intelligence (Now Cisco AI Defense): What the Platform Actually Covers

A conservative review of Robust Intelligence — the AI security pioneer now part of Cisco AI Defense. Algorith…

Isometric scene of Giskard's automated Scan probing an LLM and RAG app for vulnerabilities in a Python workflow

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Giskard Review: Open-Source Testing and Evaluation for LLM and RAG Apps

A long-form review of Giskard, the open-source Python library for testing AI systems. Its automated Scan for …

Terminal showing a security scanner running probes

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Garak Deep Dive: Architecture, Probes, and Operating the NVIDIA LLM Scanner

A hands-on, long-form review of garak — NVIDIA's open-source LLM vulnerability scanner. How its probe/detecto…

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