How to Respond to a Cyber Attack: A Step-by-Step Guide for SMEs

Cyber attacks can have devastating consequences for SMEs, impacting their operations, finances, and reputation. However, how businesses respond immediately following an incident significantly influences their recovery trajectory. A structured, efficient response can mitigate damage, restore customer confidence, and quickly resume normal operations. Many SMEs underestimate the importance of preparedness until facing a real attack, by which time the window for effective action can narrow considerably. This guide equips SMEs with a clear, actionable strategy to respond swiftly and methodically to cyber incidents, minimising disruption and enabling faster recovery. Preparation today can protect your business tomorrow.

Quick, organised responses can significantly limit damage from a cyber attack. Here’s a detailed action plan for SMEs:

• Immediate Containment: Isolate affected systems to prevent further damage. Disconnect compromised devices from your network.
• Preserve Evidence: Keep records of the attack’s details, such as timestamps, logs, and screenshots, to aid in investigation.
• Alert Authorities and Stakeholders: Notify relevant authorities like the NCSC and ICO if sensitive data is involved. Inform stakeholders promptly to maintain transparency.
• Communicate Clearly: Regularly update employees, customers, and partners about the status of the incident and measures being taken.
• Restore Operations: Use secure backups to restore your systems. Prioritise critical business functions.
• Review and Learn: Conduct a thorough review post-incident to understand what happened, identify weaknesses, and implement improvements.

Utilise the NCSC Incident Response Guide to build a comprehensive response strategy.