AI Security Tools
Tools that defend AI systems from attack: prompt injection and jailbreaks, sensitive-data leakage, model theft, and abuse of AI agents. This category covers offensive testing and runtime protection, not policy and compliance.
Looking for model risk, monitoring, and regulatory readiness instead? Browse AI Governance & Compliance →
The tools here span the AI attack surface. Red-teaming and adversarial-testing platforms probe models for weaknesses before attackers do; runtime guardrails and prompt firewalls block injection at inference time; model detection-and-response watches deployed ML; and data-loss prevention stops secrets and PII leaking into or out of LLMs. If you need model risk management, bias monitoring, auditing, or regulatory readiness instead, see AI Governance & Compliance.
Top picks
Security platform for AI models and the ML lifecycle
End-to-end security for generative AI and agents
AI-native data loss prevention across SaaS, AI apps and endpoints.
All AI Security
Securing the agentic workforce across the AI lifecycle.
AI risk intelligence for third-party AI features.
Zero-touch data protection for the GenAI era.
Other AI tool categories
Frequently asked questions
- What's the best ai security tool?
- HiddenLayer currently leads in community votes. HiddenLayer is a credible, well-funded specialist in model-centric AI security, and its breadth, discovery, supply-chain scanning, runtime defense, and attack simulation, plus mappings to MITRE ATLAS and OWASP, fit enterprises with mature AI governance needs. Notably, it remains independent as of August 2026 while several competitors (Lakera, Prompt Security, Protect AI, Robust Intelligence) have been acquired, which some buyers will see as a differentiator and others as acquisition risk. Pricing is enterprise custom with no public tiers or free plan, so it is aimed at organizations that can engage in a sales process; confirm scope and pricing directly.
- Are there free options?
- 2 tools in this category offer a free plan. Another 3 have a free trial.
- How do you rank these tools?
- Tools are ranked by a combination of community upvotes, editorial review, and feature breadth. Our editors review pricing and capabilities quarterly.
- Can I suggest a tool we're missing?
- Yes — submit it here. Our team reviews submissions weekly.