Echo

Echo builds CVE-free open source artifacts for cloud-native infrastructure, including container images, language libraries, virtual machines, and serverless runtimes. The company uses AI agents to rebuild software from source with only essential components while preserving Debian and Ubuntu compatibility, targeting enterprises and regulated federal environments that need FIPS-validated and STIG-hardened images. Founded in 2025 by the founders of Argon (acquired by Aqua Security), 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.