eBPF: the superpower of the Linux kernel Extended Berkeley Packet Filter (eBPF) is a technology that allows you to run secure programs directly in the Linux kernel without restarting or modifying the code.
Initially, eBPF was created for network analysis, but today it is used for:
Tracing system callsPerformance monitoring
SecurityThe main advantage of eBPF is minimal overhead costs. Unlike traditional agents that load the system, eBPF works almost imperceptibly.
Tetragon: the guardian of your Kubernetes
Tetragon is a tool from the creators of Cilium that transforms eBPF into a powerful security and observability system.
It does not just collect data, but analyzes the behavior of processes and can automatically respond to threats.
Tetragon Features
Detecting suspicious processes (Tetragon will notice the launch of unexpected binary files, and an attempt to escalate privileges will be blocked).
Monitoring network activity (which containers are connected to where? are there hidden C2 channels?)
Analysis of file operations (who modifies critical files? was there an attempt to access /etc/shadow?)
Flexible security policies You can set up rules like: "Prohibit all processes except Nginx from listening to port 80" or "Log all bash launches in containers"
Are you sure about a breakthrough?
- Works at the core level (bypasses intruders hiding in user space).
- Zero trust (does not trust anyone, checks everything).
- Ideal for Kubernetes (scales with the cluster).
Try it yourself
Tetragon is easy to deploy to Kubernetes via Helm:
helm repo add cilium https://helm.cilium.io
helm install tetragon cilium/tetragon -n kube-system
And for standalone systems, there are Docker images and binary assemblies.
