Topics
Browse everything Best LLM Scanners publishes by category and tag: every topic covered here, with the most recent guides listed under each one.
Tags
- #llm-security 12
- #red-teaming 11
- #guardrails 10
- #prompt-injection 8
- #owasp-llm 7
- #vulnerability-scanning 6
- #nemo-guardrails 3
- #open-source 3
- #ai-safety 2
- #ai-security 2
- #checklist 2
- #content-moderation 2
- #detection 2
- #garak 2
- #input-scanning 2
- #llama-guard 2
- #llm-guard 2
- #pyrit 2
- #ai-testing 1
- #chatbot-security 1
- #ci-cd 1
- #classifier-on-output 1
- #colang 1
- #evaluation 1
- #false-positives 1
- #guardrails-ai 1
- #jailbreak-detection 1
- #jailbreaks 1
- #llm-pentesting 1
- #microsoft 1
- #mitre-atlas 1
- #openai-moderation 1
- #output-scanning 1
- #post-generation 1
- #prompt-scanning 1
- #promptfoo 1
- #protect-ai 1
- #rebuff 1
- #refusal-tuning 1
- #runtime-filtering 1
- #safety-utility-tradeoff 1
- #supply-chain 1
- #vigil 1
- #vulnerability-testing 1
Categories
guardrails 6 posts
- LLM Prompt Scanning: What It Catches and What It MissesLLM prompt scanning checks prompts, retrieved documents and tool results before the model reads them. What it catches and what still slips past.
- NeMo Guardrails: What Colang Rails EnforceHow NVIDIA NeMo Guardrails works: the five rail types, Colang dialog flows, the guardrails server, and the latency and coverage limits to plan for first.
- Choosing an LLM Guardrail: Llama Guard, NeMo, Guardrails AIA decision guide for picking an LLM guardrail in 2026: Meta's Llama Guard 4, NVIDIA's NeMo Guardrails and Guardrails AI, and which shape fits your problem.
- LLM Guard: Input and Output Scanning for Production LLM AppsLLM Guard was archived by Protect AI in July 2026. What its input and output scanners do, and what adopting a frozen runtime guardrail costs you now.
- Classifier-on-Output: Catching Misbehavior Post-GenerationHow production teams use post-generation classifiers to catch what input filters and refusal training miss, with the architectures and their real costs.
- Llama Guard vs NeMo vs OpenAI Moderation: TradeoffsA comparison of Llama Guard, NeMo Guardrails, and the OpenAI Moderation API on policy fit, latency, cost, failure modes, and when to pick each one.
guides 4 posts
- LLM Pentesting Checklist: 8 Test Areas Mapped to OWASPAn LLM pentesting checklist in eight test areas, from prompt injection to tool abuse, mapped to OWASP LLM Top 10 2026, MITRE ATLAS and AITG test IDs.
- How to Scan an LLM for Prompt Injection: Tools and LimitsA guide to scanning LLM applications for prompt injection: offline probe suites, runtime classifiers, and what a clean scan does and does not prove.
- OWASP LLM Top 10 2026 Scanning Checklist by LayerOWASP LLM Top 10 scanning checklist for the 2026 list, with a 2025 crosswalk: what to test per risk and which scanners (garak, PyRIT, promptfoo) cover it.
- False Positive Cost in Refusal Systems: Measure and TunePractical methods for quantifying refusal false positives in LLM products: eval design, baseline rates, threshold tuning, and the regression suite.
scanners 4 posts
- LLM Security Tools: The 2026 Category MapThe six categories of LLM security tools compared: pre-deployment scanners, red-team frameworks, injection detectors, guardrails, gateways, model scanners.
- Best Tools to Test AI Chatbot Security in 2026Garak, PyRIT, Promptfoo, Giskard, and Lakera Red compared as tools to test AI chatbot security across full conversations, not single-shot prompts.
- Best LLM Vulnerability Scanners 2026: Tools ComparedA practitioner's guide to the best LLM vulnerability scanners in 2026: Garak, PyRIT, Promptfoo and Mindgard, plus the specialist and runtime layers.
- NVIDIA Garak: LLM Vulnerability Scanner GuideHow NVIDIA garak probes LLMs at v0.17.0: the CLI, JSONL findings, CI gates, the multi-turn GOAT probe, and where its pre-deployment scope stops.
detection 3 posts
- LLM Jailbreak Detection Techniques Explained by LayerJailbreak detection by layer: what perplexity filters, input classifiers, output guards and multi-turn monitoring each catch, and what they still miss.
- How to Detect Prompt Injection Vulnerabilities in LLM AppsA practitioner's guide to detecting prompt injection vulnerabilities: input classifiers, output validators, structural controls, and red-team testing.
- Rebuff vs Vigil vs LLM Guard: Prompt Injection DetectorsRebuff is archived, LLM Guard was archived in July 2026 and Vigil is alpha. What each detector does, and what that leaves you for new production work.
red teaming 3 posts
- Open Source LLM Red Teaming Tools ComparedA practitioner's guide to the main open source LLM red teaming tools: what PyRIT, Garak, HarmBench, and TextAttack cover and where they fall short.
- LLM Red Teaming Tools: garak vs PyRIT vs Promptfoo in CICompare garak, PyRIT, and Promptfoo as LLM red teaming tools: what each scans, how each fits a CI gate, and which to run per commit vs nightly.
- PyRIT: Microsoft's AI Red-Teaming Framework, ExplainedA technical breakdown of PyRIT, Microsoft's red-teaming framework for generative AI: targets, datasets, converters, scorers, attacks and executors.