Lasso Security

Lasso Security is an enterprise platform that secures an organization's use of generative AI end to end. It discovers where AI is being used (including unsanctioned tools), assesses and red-teams models and agents for vulnerabilities, and enforces real-time guardrails against prompt injection, sensitive-data leakage, and other LLM-specific risks. It deploys as a gateway, API, or SDK and is sold to enterprises via custom quotes rather than published plans.

Lasso Security is a Tel Aviv-based cybersecurity company focused entirely on the risks introduced by generative AI. Its platform spans discovery, assessment, testing, and enforcement: it maps every AI model, agent, and application in use across an organization (including unsanctioned "shadow AI"), runs automated red-teaming with thousands of attack types, and applies runtime guardrails that classify and block prompt-injection, data-leakage, and other threats in-line. The product is designed to be deployed as a gateway, via API, or through an SDK, so security teams can insert Lasso between employees or applications and the underlying models. Its guardrail layer is built for low-latency inspection so it can sit in the request path without materially slowing responses. Lasso positions itself for enterprises that are rolling out LLM copilots and agentic workflows and need visibility and control comparable to traditional application security. Lasso was founded in 2023 and raised a seed round to build out this GenAI-native approach. Because AI-security tooling is a fast-moving and crowded space, buyers should scope a proof-of-value against their own model and agent inventory rather than relying on category comparisons alone.