Detect and Stop a Pod Accessing /dev/mem
A Pod in the cluster is accessing /dev/mem.
The task
Task
A Pod in the cluster is accessing /dev/mem.
Requirements
- Create a custom Falco rule to detect access to
/dev/mem - Use Falco alerts to identify the bad Pod
- Once identified, scale the Deployment that owns the bad Pod to
0
Verify that no Pods from that Deployment are running anymore.
What this tests
Detect threats at runtime with Falco, behavioral analytics, and audit logging. On the CKS exam, Monitoring, Logging and Runtime Security tasks are graded purely on what you build in the cluster — not multiple choice — so the only way to get faster is to do them on a real cluster against a clock.
Practice it for real
prepium.sh drops you into your own isolated Kubernetes cluster in the browser — no install, no credit card. You solve the task in a real terminal, hit validate, and a programmatic checker scores exactly what you got right and wrong (with partial credit). The canonical solution unlocks after you attempt it, so you learn the fast, exam-ready way to do it.