Lasso Security LLM Guardian is an end-to-end GenAI security platform protecting every LLM interaction across cloud and on-premise deployments through shadow AI discovery, real-time threat detection, and policy enforcement. The platform addresses sophisticated threats including model theft, malicious code generation, prompt injection, data poisoning, supply chain attacks, and sensitive data disclosure through comprehensive monitoring of all GenAI tool usage across organizations.

LLM Guardian's Shadow AI Discovery autonomously uncovers all GenAI applications including the 55% of employees using unauthorized tools that bypass IT controls, providing continuous data-flow monitoring and observability. The platform deploys via Gateway, API, or SDK with one-line code integration, securing both internally developed LLM applications and employee use of third-party chatbots like ChatGPT, Gemini, and Claude. Advanced capabilities include Context-Based Access Control, real-time data masking, policy violation blocking, PII detection, and educational guidance for responsible AI usage.

Founded in Tel Aviv in 2023, Lasso raised $21 million from Entrée Capital, CyberArk Ventures, Singtel Innov8, and Samsung Next. Gartner named Lasso a Cool Vendor for AI Security in 2024 and representative vendor in its Market Guide for AI Gateway. The platform integrates with Cloudflare for network-level protection and is available in Microsoft Azure Marketplace, serving financial services, healthcare, government agencies (via Lasso Federal LLC), and regulated industries with HIPAA and GDPR compliance support.