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This guide details methods and rules for detecting container escape attempts, a critical security vulnerability where an adversary breaks out of container isolation to access the host system or other containers. It covers monitoring syscalls, namespace manipulation (e.g., nsenter, unshare), accessing sensitive host paths (/proc), and detecting privileged operations using tools like Falco and eBPF.

Tetragon, a CNCF project under Cilium, provides advanced, kernel-level runtime security observability and policy enforcement in Kubernetes clusters. By utilizing eBPF, it monitors process execution, file access, and network connections with minimal overhead, enabling detection and prevention of container escapes, unauthorized access, and suspicious activity.

A comprehensive guide on implementing advanced security observability using eBPF and Cilium Tetragon. This skill covers real-time tracking of process execution, network connections, and file system access directly in the kernel. Learn how to author TracingPolicy CRDs, utilize kprobe/tracepoint hooks for in-kernel filtering, and enforce runtime security policies (e.g., process killing) on Linux hosts or Kubernetes clusters.