📋ISO 27001 A.5.24Rule: ISO27001-A524high

Information Security Incident Management Planning and Preparation

Description

The organisation shall plan and prepare for managing information security incidents.

⚠️ Risk Impact

First-incident execution determines breach cost. Unprepared teams improvise; prepared teams execute. The cost difference is 3-5× in measured organisations.

🔍 How EchelonGraph Detects This

ISO27001-A524Automated scanner rule

EchelonGraph's Tier 1 Cloud Scanner automatically checks for this condition across all connected cloud accounts. Violations are flagged as high-severity findings with remediation guidance.

🔧 Remediation

Document IR plan with playbooks per incident type (ransomware, BEC, data exfil, account takeover). Tabletop quarterly. Define IR roles + authority. 24/7 on-call rotation.

💀 Real-World Attack Scenario

A retailer was hit by Akira ransomware in 2024. The team had no playbook for ransomware specifically (generic IR plan only). Response improvisation took 8 days before backups were verified + restoration began. Companies with rehearsed playbooks restored in 2-3 days. Cost difference: $3.4M in SLA + customer churn.

💰 Cost of Non-Compliance

Rehearsed-IR cost vs improvised: 58% lower (Ponemon Cyber Resilient Organization 2024). GDPR Article 33 violations (>72h authority notification): up to €10M / 2%.

📋 Audit Questions

  • 1.Show ransomware playbook.
  • 2.When was last tabletop exercise?
  • 3.Who is Incident Commander? Authority documented?
  • 4.Show real-incident timeline from last 12 months.

🎯 MITRE ATT&CK Mapping

T1486 — Data Encrypted for Impact

⚡ Common Pitfalls

  • Single generic IR plan — same playbook for ransomware + BEC + DDoS (one playbook fits poorly all)
  • No tabletop — first execution is during real incident
  • Communications playbook missing — tech response succeeds but external comms damage compounds

📈 Business Value

Rehearsed IR converts incidents from existential to operational. Highest-leverage security investment after MFA.

⏱️ Effort Estimate

Manual

40-80 hours playbook authoring + 8 hours quarterly tabletop

With EchelonGraph

EchelonGraph maintains live IR runbooks; integrates with PagerDuty/Slack

🔗 Cross-Framework References

SOC2-CC7.4NIST-IR-4

Automate ISO 27001 A.5.24 compliance

EchelonGraph continuously monitors this control across all your cloud accounts.

Start Free →