Cyber incidents can cause major disruption, financial loss, and reputational harm. Having a well-prepared incident response plan ensures that an organisation can respond quickly and effectively when an incident occurs.
The Australian Institute of Cyber Security (AICS) recommends that all organisations maintain and regularly update an incident response plan covering the following key elements.
1. Preparation
Define roles, responsibilities, and contact details for the incident response team. Ensure that team members are trained and have access to required tools and resources.
2. Detection and reporting
Implement monitoring systems to identify suspicious activity. Establish clear reporting procedures so that incidents are promptly escalated to the right people.
3. Containment
Once an incident is confirmed, act quickly to limit the impact. This may include isolating affected systems, disabling compromised accounts, or blocking malicious network traffic.
4. Eradication
Remove the cause of the incident, such as malware or unauthorised accounts. Ensure that vulnerabilities are patched to prevent recurrence.
5. Recovery
Restore systems and data from clean backups. Monitor closely to ensure normal operations can resume without further issues.
6. Post-incident review
Analyse what happened, how it was handled, and what can be improved. Update policies, procedures, and security measures based on lessons learned.
By implementing these steps, organisations can reduce downtime, protect their reputation, and meet legal and regulatory obligations following a cyber incident.
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