Files
Anthropic-Cybersecurity-Skills/skills/performing-cloud-native-forensics-with-falco/SKILL.md
T
mukul975 efca3ec611 feat: add NIST CSF 2.0 nist_csf field to all 754 cybersecurity skills
Mapped every skill to NIST CSF 2.0 subcategory IDs (GV/ID/PR/DE/RS/RC functions)
based on subdomain and content analysis. Restores 11 skills corrupted during
prior rebase, re-enriching with ATLAS, D3FEND, NIST AI RMF, and CSF 2.0 fields.

All 754 skills now carry structured mappings for all 5 security frameworks:
- MITRE ATT&CK (in tags)
- MITRE ATLAS v5.5 (atlas_techniques)
- MITRE D3FEND v1.3 (d3fend_techniques)
- NIST AI RMF 1.0 (nist_ai_rmf)
- NIST CSF 2.0 (nist_csf)
2026-04-06 11:17:40 +02:00

2.3 KiB

name, description, domain, subdomain, tags, version, author, license, nist_csf
name description domain subdomain tags version author license nist_csf
performing-cloud-native-forensics-with-falco Uses Falco YAML rules for runtime threat detection in containers and Kubernetes, monitoring syscalls for shell spawns, file tampering, network anomalies, and privilege escalation. Manages Falco rules via the Falco gRPC API and parses Falco alert output. Use when building container runtime security or investigating k8s cluster compromises. cybersecurity cloud-security
performing
cloud
native
forensics
1.0 mahipal Apache-2.0
PR.IR-01
ID.AM-08
GV.SC-06
DE.CM-01

Performing Cloud Native Forensics with Falco

When to Use

  • When conducting security assessments that involve performing cloud native forensics with falco
  • When following incident response procedures for related security events
  • When performing scheduled security testing or auditing activities
  • When validating security controls through hands-on testing

Prerequisites

  • Familiarity with cloud security concepts and tools
  • Access to a test or lab environment for safe execution
  • Python 3.8+ with required dependencies installed
  • Appropriate authorization for any testing activities

Instructions

Deploy and manage Falco rules for runtime security detection in containerized environments. Parse Falco alerts for incident response.

# Custom Falco rule for detecting shell in container
- rule: Shell Spawned in Container
  desc: Detect shell process started in a container
  condition: >
    spawned_process and container
    and proc.name in (bash, sh, zsh, dash, csh)
    and not proc.pname in (docker-entrypo, supervisord)
  output: >
    Shell spawned in container
    (user=%user.name command=%proc.cmdline container=%container.name
     image=%container.image.repository)
  priority: WARNING
  tags: [container, shell, mitre_execution]

Key detection rules:

  1. Shell spawn in non-interactive containers
  2. Sensitive file access (/etc/shadow, /etc/passwd)
  3. Outbound connections from unexpected containers
  4. Privilege escalation via setuid/setgid
  5. Container escape via mount or ptrace

Examples

# Run Falco with custom rules
falco -r /etc/falco/custom_rules.yaml -o json_output=true
# Parse JSON alerts
cat /var/log/falco/alerts.json | python3 -c "import json,sys; [print(json.loads(l)['output']) for l in sys.stdin]"