Individual skill
implementing-ebpf-security-monitoring
Implements eBPF-based security monitoring using Cilium Tetragon for real-time process execution tracking, network connection observability, file access auditing, and runtime enforcement. Covers TracingPolicy CRD authoring with kprobe/tracepoint hooks, in-kernel filtering via matchArgs/matchBinaries selectors, JSON event export, and integration with SIEM pipelines. Use when building kernel-level runtime security observability for Linux hosts or Kubernetes clusters.
internal/tools/skills/data/security-operations/implementing-ebpf-security-monitoring/SKILL.md
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- Last checked
- Nov 9, 2026
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- Nov 9, 2026
- License
- Apache-2.0
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- cybersecurity Repository topic
- security Repository topic
- bug-bounty Repository topic
- automation Repository topic
- autonomous-pentesting Repository topic
- ai-agent Repository topic
- ai-security Repository topic
- ethical-hacking Repository topic
- golang Repository topic
- penetration-testing Repository topic
- implementing Declared skill tag
- ebpf Declared skill tag
- security Declared skill tag
- monitoring Declared skill tag
- tetragon Declared skill tag
- cilium Declared skill tag
- runtime Declared skill tag
- observability Declared skill tag
- security Derived category
- operations Derived category
- devops Derived category
- devops-containers Derived category
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# Implementing eBPF Security Monitoring
## When to Use
- When deploying kernel-level runtime security monitoring on Linux hosts or Kubernetes clusters
- When you need sub-millisecond visibility into process execution, network connections, and file access
- When traditional userspace monitoring tools introduce unacceptable performance overhead
- When building detection pipelines that require in-kernel filtering before events reach userspace
- When enforcing runtime security policies (kill process, send signal) at the kernel level
## Common Misconfigurations & Verification
- **No BTF = silent no-load:** Tetragon needs kernel BTF (`/sys/kernel/btf/vmlinux`) or a matching external BTF for kprobe arg typing. On older/stripped kernels (no `CONFIG_DEBUG_INFO_BTF`) probes fail to attach and you get zero kprobe events while `process_exec` still flows — masking the gap. Verify `ls /sys/kernel/btf/vmlinux` and check `kubectl logs -n kube-system -l app.kubernetes.io/name=tetragon` for attach errors.
- **Ring-buffer/event drops under load:** high event volume overflows the perf/ring buffer and Tetragon drops events — a coverage hole that looks like "nothing happened." Watch `tetragon_*_events_total` and missed/`map_errors` metrics, scope policies with in-kernel `matchArgs`/`matchBinaries` selectors (filter in-kernel, not in userspace), and avoid an unfiltered `tcp_connect` Post on a busy host.