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Building Resilience in Cyber Security Operations: The Unintended Drill of a Global IT Disruption

Last week’s major global IT disruption, sparked by a CrowdStrike sensor deployment causing Windows PCs to blue screen, underscores the necessity of fortifying our defences and preparing for the unexpected.  

This incident, though challenging, offers a unique opportunity to ‘raise the floor’ of our resilience by confronting adversity head-on and learning from the experience. 

A recap into the impact

For many organisations, the blue screen errors created significant disruptions, forcing them to scramble to restore functionality and maintain business continuity. While such events can be frustrating, they also serve as a valuable simulation of a more severe cyber attack. Unlike a malicious attack, this disruption is benign, providing a critical learning experience without the lasting damage that a cyber attack might inflict.

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The unintended global drill

Think of this as an unplanned but highly effective drill. Most businesses rarely, if ever, test their disaster recovery (DR) processes and policies to this extent. On Friday, they are compelled to do so. This real-world test reveals the strengths and weaknesses of their current strategies, providing an invaluable opportunity for growth and improvement.

Understanding risk more clearly:

Businesses now have a first-hand understanding of the risks associated with IT disruptions. This experience highlights the necessity of robust DR plans and the importance of being prepared for unexpected events. 

Identifying weaknesses:

Businesses now have a first-hand understanding of the risks associated with IT disruptions. This experience highlights the necessity of robust DR plans and the importance of being prepared for unexpected events. 

Test environments for updates:

Last weeks events underscores the need for scrutiny when applying software updates. Both businesses and their suppliers must adopt a more cautious approach, ensuring that updates do not inadvertently cause widespread disruptions. The implementation of a test environments to safely run crucial patches is advised.

Enabling businesses to continue with best practise software updates and patches while re-gaining confidence in doing so. 

Embracing the challenge

Resilience in cyber security operations is not just about having the right tools and technologies in place; it’s about cultivating a mindset that embraces challenges and learns from adversity. The recent disruption, though inconvenient, is a powerful reminder of this principle. By confronting this challenge head-on, businesses can emerge stronger, more resilient, and better prepared for future threats. 

Moving Forward

As we move forward, it’s essential to leverage the lessons learned from this incident. Here are a few steps to consider: 

1. Conduct Comprehensive Reviews:

Evaluate Disaster Recover processes and policies in light of the recent disruption. Identify areas for improvement and implement necessary changes. 

2. Enhance Communication:

Ensure clear and effective communication channels within your organisation and with your suppliers. This can mitigate the impact and confusion of similar events in the future. 

3. Invest in Training:

Regularly train your teams on Disaster Recovery protocols and simulate various scenarios. This prepares them to respond effectively to real-world incidents.