Echo, a fast-growing leader in AI-powered secure software infrastructure, has successfully raised $35 million in Series A funding, marking a major milestone in its mission to eliminate security risks from cloud-native development. The funding round was led by N47, with additional participation from Notable Capital, Hyperwise Ventures, and SentinelOne’s S Ventures. With this fresh capital, Echo plans to scale its platform as demand rises for secure-by-design cloud infrastructure across enterprises.

Already, Echo is protecting production workloads for well-known enterprise customers, including Varonis, EDB, and UiPath, highlighting the platform’s growing traction among organizations operating at scale. As modern cloud environments become increasingly complex, Echo’s approach addresses a critical yet often overlooked security gap: container base images.

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Today, nearly every cloud application relies on container base images such as Python, Node.js, or Go. However, while these images accelerate development, they also introduce massive security risks. Echo’s internal research reveals that official Docker images often contain well over 1,000 known vulnerabilities, exposing organizations to threats long before application code is even written.

“Studies consistently show that more than 90% of container vulnerabilities originate from the base image layer rather than application code,” said Eylam Milner, co-founder and CTO of Echo. “This means enterprises with thousands of cloud services inherit millions of security issues before their engineers write a single line of code.”

Instead of attempting to patch flawed open-source images, Echo takes a fundamentally different approach. The company builds CVE-free container base images from scratch, stripping away unnecessary components and eliminating vulnerabilities at the source. These hardened images function as seamless, drop-in replacements for standard Docker images, allowing teams to adopt them without disrupting existing workflows.

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At the core of this innovation is Echo’s use of purpose-built AI agents. These agents autonomously construct container images and continuously maintain them as new vulnerabilities emerge. From researching CVEs and identifying impacted images to developing fixes, applying patches, and generating pull requests for human review, the AI handles the entire lifecycle. As a result, Echo’s lean team of just 35 employees can maintain more than 600 secure container images, a task that would otherwise require hundreds of engineers using traditional methods.

“AI agents now write more code than humans, while bad actors use AI to compress exploit windows from weeks down to hours,” said Moshe Zilberstein, General Partner at N47. “This AI-versus-AI arms race makes manual vulnerability management obsolete. Echo is building what every Fortune 1000 company needs: an AI-native OS that’s secure-by-design.”

Echo was founded by Eilon Elhadad (Co-Founder & CEO) and Eylam Milner (Co-Founder & CTO), both veterans of Israel’s elite 8200 technology unit. Notably, this is not their first success in the security space. Their previous company, Argon, focused on software supply chain security and was acquired by Aqua Security for $100 million just one year after launch. With Echo, the founders aim to redefine how enterprises think about container security in an AI-driven world.

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