Cyber Incident Response: What to Do in the First 60 Minutes of a Breach

A cyberattack is not an “if” scenario for Australian businesses anymore – it is a “when.” The ACSC receives a cybercrime report every six minutes in Australia. What separates businesses that recover quickly from those that suffer months of disruption, reputational damage, and financial loss is not whether they were attacked. It is whether they had a cyber incident response plan in place before the attack happened. Those first 60 minutes are decisive. Here is what you need to know – and what your business needs to have ready before the worst happens. What Is a Cyber Incident Response Plan? A cyber incident response plan is a documented, pre-approved set of procedures that defines exactly what your team does when a security incident occurs. It removes the paralysis and confusion of trying to make critical decisions under pressure in real time. A complete plan covers: Without this, businesses waste critical time figuring out who to call, what to disconnect, and what to tell customers — while the attackers continue doing damage. Learn how our Business Continuity service ensures rapid recovery after an incident The First 60 Minutes: A Practical Incident Response Timeline When a cyber incident is detected, time is your most critical resource. Here is what the first hour should look like: Minutes 0–10: Detect and Report Minutes 10–20: Contain Minutes 20–40: Assess Minutes 40–60: Communicate and Document See how Netlogyx Managed IT Support provides rapid incident response support Australian Legal and Regulatory Obligations During an Incident Cyber incident response in Australia carries specific legal obligations that businesses must understand before an incident occurs – not after. Notifiable Data Breaches (NDB) Scheme: If your business is covered by the Privacy Act 1988 (generally businesses with turnover over $3M, or those in certain sectors) and a breach is likely to cause serious harm to individuals, you must notify the Office of the Australian Information Commissioner (OAIC) and affected individuals as soon as practicable. Ransomware Payment Reporting: From 30 May 2025, certain businesses that pay a ransom are required to report it to the Australian Signals Directorate within 72 hours. ASX-listed companies: Must disclose material cyber incidents to the ASX under continuous disclosure obligations. Not knowing these obligations is not a defence. Your incident response plan must include a legal review checklist so decisions are made correctly under pressure. Building Your Cyber Incident Response Capability Most SMBs do not need a dedicated internal security team to have a strong cyber incident response capability. What they need is: Netlogyx works with clients to develop incident response plans, test them through tabletop exercises, and stand ready as the first call when something goes wrong. Explore our SIEM service for real-time incident detection and alerting Do You Know What to Do If Your Business Is Breached Tonight? Most businesses do not. Netlogyx helps Australian SMBs build and maintain cyber incident response plans that work under real pressure – not just on paper. Frequently Asked Questions Q: How often should we test our incident response plan?A: At minimum, annually – and after any significant change to your IT environment, staff structure, or business operations. Tabletop exercises, where the team walks through a simulated incident scenario, are the most practical and cost-effective testing method. Q: Should we pay a ransom if we are hit with ransomware?A: This is a complex decision that depends on your backup status, the data involved, the attacker group, and legal obligations. It is critical to have your IT provider, legal counsel, and potentially law enforcement involved before making this decision. Paying does not guarantee data recovery and may fund further attacks. Q: What is the biggest mistake businesses make during a cyber incident?A: Trying to handle it without expert help. The second biggest mistake is turning off affected machines before forensic data is captured. Both mistakes compromise your ability to understand what happened and recover fully. The Businesses That Recover Fastest Are the Ones That Planned A cyber incident response plan will not prevent every attack. But it determines how quickly you recover, how much damage is contained, and whether your business survives intact. Netlogyx gives Australian SMBs the planning, tools, and expert support to respond with confidence when it matters most. (We are not looking to replace your current provider, just offering an alternative perspective) Written by Neil Frick Sources & References