You’ll rarely see a cyber breach coming. In a matter of moments, everything you’ve
built could be put at risk, leaving you to pick up the pieces.
But while the damage might seem insurmountable, there are clear steps you can take to recover and even come out stronger on the other side. Here’s how you can minimise the fallout and get back on track.
Contain the damage and understand your legal obligations
The first thing to do when an attack hits is to contain the damage. Disconnect any compromised systems from the network to prevent further spread. If you suspect personal data has been breached, you’ll need to act quickly.
Under UK GDPR, you must report certain types of breaches to the Information Commissioner’s Office (ICO) within 72 hours. Use the ICO’s self-assessment tool to determine whether the breach requires formal notification. If it’s a case of fraud or cybercrime, report the incident to Action Fraud or the National Cyber Security Centre (NCSC).
Ignoring these obligations can result in hefty fines, so make sure to act fast. At this stage, it’s also worth consulting a solicitor. Having legal guidance can make sure your internal investigation remains protected from potential litigation down the line.
Recover systems and data
Once you’ve contained the attack, it’s time to focus on recovery. Before you begin restoring systems, verify the integrity of your backups. If attackers encrypted or corrupted your backups, restoring them could bring the threat back into your environment.
After that, apply any necessary patches to address vulnerabilities that may have allowed the breach in the first place. Only then should you reconnect your systems. When you do restore your network, don’t forget about security protocols like a company-wide password reset.
Consider enforcing Multi-Factor Authentication (MFA) across your organisation as a first step towards strengthening your defences.
Communicate with stakeholders
Cyberattacks have a ripple effect. Beyond your systems, your business relationships and reputation are at stake. Transparency is key. Keep employees in the loop to prevent rumours from spreading. Use a script for customer-facing staff to ensure consistency in messaging.
For customers, explain the incident in clear, non-technical terms, stating what data was affected and how you’re addressing the issue. For suppliers, inform them if your compromised systems could potentially expose their networks to risk.
Managing communication with stakeholders effectively can help restore trust, which is harder to rebuild than the systems themselves.
Conduct a post-incident review
Once you’ve recovered, it’s important to review the incident thoroughly. What went wrong? Was the breach due to a human error, like a phishing email, or a technical issue, like outdated software? By answering these questions, you can update your risk register and identify weaknesses in your security posture.
This is also the time to consider Cyber Essentials, a UK government-backed scheme to help businesses protect themselves from common cyber threats. If you haven’t already, applying for this certification can signal to your customers that you’ve bolstered your defences.
Bolster your defences going forward
It’s tempting to view a cyberattack as something that’s behind you, but the reality is that it could happen again. To avoid falling victim to the same attack twice, invest in long-term cybersecurity measures. Managed firewall services could be key to this strategy, providing round-the-clock monitoring to stop threats before they even reach your systems.
Along with these tools, make cybersecurity a part of your business culture. Instead of treating it as an annual tick-box exercise, provide your team with ongoing security training. A workforce that’s aware of the latest threats is your first line of defence.
In the aftermath of an attack, it’s crucial to act fast and stay informed. By following
the steps above, you’ll not only bounce back but also improve your cybersecurity
resilience for the future.
