Lasso Security
Lasso Security provides a platform to secure AI agents and applications at enterprise scale.
- Categories
- AI and LLM security, Data loss prevention, Application security testing, Breach and attack simulation
- Based in
- Tel Aviv, Israel
- Founded
- 2023
- Ownership
- Private
About Lasso Security
Lasso Security sells an AI security platform for enterprises. It protects AI agents and AI applications that companies build and deploy, wherever they run. The platform covers discovery, risk assessment and runtime protection across the AI lifecycle. It is aimed at security teams in large organisations, including financial services firms and public sector agencies. The platform discovers AI agents and homegrown applications through platform integrations and CI connections. It inventories agents, maps models, system prompts, tools and guardrails, and keeps the inventory current. Posture management looks at exposures, permissions and reachable sensitive data, and aligns to NIST and OWASP frameworks. Automated red teaming tests applications with a large attack library, multi-turn agentic attacks and context poisoning. Runtime enforcement applies policies at the proxy, API or AI gateway layer, and detection and response finds and stops AI threats with intent analysis. Lasso says its platform is more cost-effective than cloud-native guardrails, classifies in under 50 milliseconds and has a 98.6 percent detection accuracy rate. It holds three patents pending.
Products
- Lasso AI Security PlatformA platform that discovers, assesses and protects AI agents and applications across their lifecycle.
- Discovery & AI-BOMFinds AI agents and homegrown applications and inventories models, prompts, tools and guardrails.
- AI Security Posture ManagementAnalyses exposures, permissions and sensitive data reach, and checks alignment with NIST and OWASP.
- Automated AI Red TeamingRuns adversarial tests, including multi-turn agentic attacks, to find exploitable vulnerabilities.
- Runtime EnforcementApplies policies at the proxy, API or AI gateway layer as applications change.
- AI Detection & ResponseDetects and terminates AI threats and gives full context on each attack.
Ownership and deals
- Raised $30m in a seed roundInvestor ClearSkyReport on the Lasso Security funding round of September 2026 (opens in a new tab)
- Raised $6m in a seed roundInvestor Entrée CapitalReport on the Lasso Security funding round of November 2023 (opens in a new tab)
Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.
Other AI security companies
Sources
- lasso.security
- lasso.security/the-team
- lasso.security/contact-us
- lasso.security/platform/ai-security
- lasso.security/platform/ai-red-teaming
- lasso.security/use-cases/financial-services
- lasso.security/blog/bringing-claude-enterprise-activity-into-lasso-with-claudes-compliance-api
- lasso.security/use-cases/public