10 Open Source Kubernetes Security Tools 2025

A wild 440% spike in Kubernetes vulnerabilities over five years calls for open-source security tools that actually get the job done. Still, half of the organizations feel like they're playing catch-up trying to lock it down. Enter tools like Falco and Istio. Falco sniffs out runtime anomalies while Istio armors services with TLS. Together, they highlight why dynamic threat detection isn't just a luxury—it's a necessity.