Lasso Security vs Prompt Security: Which One Covers More of the OWASP LLM Top 10 in 2026?
Lasso Security and Prompt Security are both Guardrails / LLM Firewall vendors. Lasso Security covers 3 of 10 OWASP LLM risks and Prompt Security covers 3, as of 2026-07-13. Based on llmthreat's coverage scoring, Lasso Security and Prompt Security cover the same number of OWASP LLM Top 10 risks (3 each); the difference is in which ones. The full row-by-row diff is below.
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Spec comparison
| Attribute | Lasso Security | Prompt Security |
|---|---|---|
| Category | Guardrails / LLM Firewall | Guardrails / LLM Firewall |
| Deployment | SaaS with runtime proxy/gateway; MCP security for agents | SaaS + on-prem/self-hosted; inline proxy, browser extension, SDK |
| Best for | Enterprises wanting full-lifecycle GenAI security from shadow-AI discovery through runtime protection and red teaming | Governing employee GenAI/shadow-AI usage and wrapping homegrown LLM apps with real-time DLP and injection defense |
| Founded | 2023 | 2023 |
| Funding | Undisclosed | ~$23M total ($5M seed + $18M Series A) |
| Status | Active | Acquired · SentinelOne |
OWASP LLM Top 10 coverage: Lasso Security vs Prompt Security
This diff is llmthreat's editorial read of both vendors' public documentation as of 2026-07-13, not an audited or vendor-endorsed score.
| OWASP LLM Risk | Lasso Security | Prompt Security |
|---|---|---|
| LLM01 Prompt Injection | Covered | Covered |
| LLM02 Sensitive Information Disclosure | Covered | Covered |
| LLM03 Supply Chain | Partial | Not covered |
| LLM04 Data and Model Poisoning | Partial | Not covered |
| LLM05 Improper Output Handling | Partial | Partial |
| LLM06 Excessive Agency | Covered | Partial |
| LLM07 System Prompt Leakage | Unverified | Partial |
| LLM08 Vector and Embedding Weaknesses | Unverified | Partial |
| LLM09 Misinformation | Unverified | Not covered |
| LLM10 Unbounded Consumption | Unverified | Covered |
Where they differ
Lasso Security addresses LLM03 Supply Chain, LLM04 Data and Model Poisoning — risks where Prompt Security scores Not covered or Unverified.
Prompt Security covers LLM07 System Prompt Leakage, LLM08 Vector and Embedding Weaknesses, LLM10 Unbounded Consumption where Lasso Security doesn't.
On the rest, they overlap. Past those gaps the decision is depth per risk, deployment, and price, not breadth.
Which should you choose?
On raw counts it's a tie at 3 covered risks each — the difference is which risks. Lasso Security is built for enterprises wanting full-lifecycle GenAI security from shadow-AI discovery through runtime protection and red teaming, while Prompt Security suits governing employee GenAI/shadow-AI usage and wrapping homegrown LLM apps with real-time DLP and injection defense. Both rows sit in the full coverage matrix — read the profiles before deciding: Lasso Security and Prompt Security.
Frequently asked questions
Does Lasso Security or Prompt Security cover more of the OWASP LLM Top 10?
Neither — both cover 3 of the ten risks by our scoring, though not the same ones. The diff table above shows where they split.
Are Lasso Security and Prompt Security independent?
Lasso Security is independent; Prompt Security was acquired by SentinelOne, as of 2026-07-13.