Security platform for AI models and the ML lifecycle
#ai-security#model-security#adversarial-ml#runtime-defense 4 views
Category
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.
14 tools·3 with free plan·4 with free trial
Read the editor's roundup →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.
14 tools reviewed3 with a free plan4 with a free trial13 with an API4 self-hostable4 paid-only
Where to start
Not enough community votes to rank this category yet — this is a shortlist, not an order of merit.
AI-driven compliance automation for SOC 2, HIPAA, ISO 27001 and more.
Delve is a compliance-automation platform for startups and mid-market teams, bought by founders, security and compliance leads pursuing certifications to close enterprise deals. Its AI agents genuinely speed up evidence collection and monitoring, but compliance automation accelerates paperwork, not the underlying security work, and an independent auditor still issues the certification. Weigh integration coverage, auditor relationships and ongoing monitoring against competitors, and treat 'compliance at speed' claims with healthy scrutiny. Pricing is custom.
contact·Custom
On-device security layer that inspects coding agent actions before they execute
Harden is targeting the right layer. Most agent safety tooling reviews what happened; Harden intervenes before the command runs, which is where the risk actually sits. Running the models on-device is a meaningful design choice for teams that cannot ship code context to a vendor, and the free tier being genuinely free rather than a trial is unusual in security tooling. The constraints are real: macOS and Linux only, with the full local model requiring Apple Silicon, and no Windows support at all. Benchmark claims are the vendor own, so treat them as a starting point rather than independent validation.
freemium·Free
Zero-touch data protection for the GenAI era.
Harmonic Security is an independent, Series A vendor (roughly $26M raised, led by Next47) with a focused, well-articulated pitch: modern data protection for AI usage plus shadow-AI discovery. Its model-based classification approach is a credible answer to the limits of rule-based DLP, and it has RSA Innovation Sandbox recognition. It is still a relatively small, growing company, and pricing is enterprise and sales-led with no public figures. Note the easy-to-confuse point: SentinelOne acquired Prompt Security, not Harmonic -- Harmonic remains independent as of August 2026.
contact·Custom
All AI Security
End-to-end security for generative AI and agents
#ai-security#llm-security#guardrails#red-teaming 2 views
AI-native data loss prevention across SaaS, AI apps and endpoints.
#data loss prevention#data security#ai security#compliance 2 views
Securing the agentic workforce across the AI lifecycle.
#ai-security#ai-red-teaming#agent-security#guardrails 2 views
AI risk intelligence for third-party AI features.
#ai-risk-intelligence#third-party-risk#prompt-injection#grc 1 views
Other AI tool categories
Frequently asked questions
- What's the best ai security tool?
- Delve currently leads in community votes. Delve is a compliance-automation platform for startups and mid-market teams, bought by founders, security and compliance leads pursuing certifications to close enterprise deals. Its AI agents genuinely speed up evidence collection and monitoring, but compliance automation accelerates paperwork, not the underlying security work, and an independent auditor still issues the certification. Weigh integration coverage, auditor relationships and ongoing monitoring against competitors, and treat 'compliance at speed' claims with healthy scrutiny. Pricing is custom.
- Are there free options?
- 3 tools in this category offer a free plan. Another 4 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.