NC4

Incident Response Timeline

Minimal operational steps for the first 72 hours.

0-15 min · Contain and prevent spread

  • Citizen / Individual: Disconnect affected device. Stop sharing credentials. Preserve screenshots and links.
  • Organization: Isolate infected endpoint/session. Disable compromised accounts. Block malicious domains/IPs.
  • CII / Essential Service: Activate incident command. Isolate impacted segment safely. Increase SOC monitoring.

15-60 min · Escalate and preserve evidence

  • Citizen / Individual: Record timeline and references. Preserve SMS/email/call logs. Do not delete suspicious artifacts.
  • Organization: Assign incident lead. Freeze logs and traces. Notify internal executive/legal owner.
  • CII / Essential Service: Notify regulator/internal crisis team. Capture continuity impact. Prepare NC4 status update.

1-4 hrs · Report and coordinate

  • Citizen / Individual: Submit NC4 report. Contact provider for financial fraud. Use hotline for urgent escalation.
  • Organization: Submit scope and containment status. Share attack vector and affected assets. Provide accountable contacts.
  • CII / Essential Service: Submit priority report. Include critical service impact. Maintain regular updates.

24-72 hrs · Recover and communicate

  • Citizen / Individual: Reset passwords and enable MFA. Monitor accounts. Warn contacts if needed.
  • Organization: Restore services in phases. Issue user safety communication. Perform post-incident review.
  • CII / Essential Service: Validate restoration integrity. Issue regulator-aligned summary. Track corrective actions to closure.

Checklist · Citizen / Individual

  • I isolated affected account/device.
  • I preserved evidence.
  • I submitted NC4 report and provider alert where needed.

Checklist · Organization

  • Containment owner assigned.
  • Evidence preservation confirmed.
  • NC4 report submitted with impact summary.

Checklist · CII / Essential Service

  • Crisis governance activated.
  • Continuity risk assessed.
  • NC4/regulator notification initiated.