cis_5_9 — Network Security Group flow log retention set to >= 90 days¶
Summary
Severity: Medium · Pillar: Visibility · Chain role: AMPLIFIER
Description¶
NSG flow log retention below 90 days limits forensic investigation of network-based attacks including lateral movement and data exfiltration.
Mapping¶
| Framework | Control / Reference |
|---|---|
| NIST 800-53 | AU-11 |
| NIST 800-207 | — |
| CIS Azure | 5.9 |
| MITRE ATT&CK Technique | T1070 |
| MITRE ATT&CK Tactic | Defense Evasion |
| Zero-Trust Tenet | — |
| Framework tags | cis-azure-2.0, nist-800-53 |
Source¶
Rule defined at policies/azure/cis/logging/cis_5_9.rego.