Echo

Echo builds CVE-free open source artifacts for cloud-native infrastructure, including container images, language libraries, virtual machines, and serverless runtimes. Founded in 2025 by former Argon Security executives, the company uses AI agents to rebuild software from source with only essential components while preserving Debian and Ubuntu compatibility. Echo serves enterprise customers including Varonis, EDB, and Port and raised $50M within its first 10 months from N47, Notable Capital, Hyperwise Ventures, and SentinelOne's S Ventures.