Post-breach: Navigating security after a cyber attack
The recent cyber attacks on major UK retail brands may have faded from headlines, but for affected organisations, the real work begins after the crisis. The post-breach phase marks a critical transition, from active threat response to rebuilding and strengthening systems, processes, and culture.
What is post-breach?
Following attacks on retailers like Marks & Spencer, Harrods, and the Co-op, which saw disruptions and financial losses, the visible symptoms may have subsided. However, behind the scenes, these companies entered a vital stage of analysis and transformation. The breach, likely involving ransomware and supply chain compromise, highlighted a need for organisations to evolve their cyber defences.
Post-breach is not the moment when systems are simply brought back online. It’s the point when an organisation begins to make informed, strategic decisions grounded in a clearer understanding of vulnerabilities and risk. A heightened state of awareness follows, as businesses become more attuned to network behaviour, access patterns, and potential red flags. This awareness must transition from short-term vigilance to long-term monitoring and learning.
Recovery isn’t the finish line
Lasting improvements come from rethinking processes, verifying backups, prioritising critical systems, and preventing recurrence. Communication is also vital – internally, staff need clarity; externally, messages must be timely, transparent, and in line with legal obligations. The tone should reflect confidence and accountability to maintain trust.
Structured “lessons learned” sessions should be prioritised to capture technical issues, leadership decisions, and operational gaps. These insights inform better preparation for the future, supported by ongoing tabletop exercises that test and refine response strategies.
Cyber insurance is another key post-breach consideration. Insurers assess response effectiveness and preparedness. Organisations that can demonstrate strong recovery protocols, backup strategies, and documented learnings are better positioned to negotiate favourable terms and retain coverage.
Final thoughts
Ultimately, post-breach is not about closure – it’s about continuous improvement. Regularly revisiting insights, updating incident response plans, and adapting to evolving threats must become part of organisational DNA. Every department, from IT to leadership, plays a role in maintaining this security culture and handled correctly, the post-breach phase becomes a turning point.
The post-breach stage of a cyber attack sits at the crossroads of IT security and cyber security. At FluidOne we want you to be comprehensively secured against cyber threats. That is why we not only offer our own IT security solutions, but we also have our own dedicated cyber centre of excellence – CSA Cyber – providing consultancy, Offensive Security, and Managed Security solutions.
For more information, you can reach us through https://www.fluidone.com/contact, call us at 01273 384100 or email us at brighton@fluidone.com to get in touch with our experts today to find out how we can help empower your business.