Tetragon is an eBPF-based security tool for Kubernetes and other Linux container environments. It attaches to kernel events to observe process execution, file access, network activity, and other runtime behavior, then can enforce policies in real time. Because it operates close to the kernel, it gives defenders high-fidelity visibility into what workloads are actually doing, not just what they were supposed to do.
In cyber security, that matters because container and cloud-native attacks often move quickly and blend into normal workload activity. Tetragon can help detect suspicious command execution, unexpected privilege use, or lateral-movement patterns as they happen. It can also block or signal against unsafe actions. The tradeoff is trust: if an attacker gains root-equivalent control of the node, they may be able to tamper with kernel-level monitoring or weaken its enforcement. For that reason, Tetragon is most effective when paired with strong node hardening and off-node logging.