Download Our Cyber Insights Document on the Co-Op Cyber Attack
In April 2025, the UK retail and services group Co-op detected a sophisticated cyber-incident that forced the shutdown of key IT systems, including its stock ordering and back-office platforms, as a precautionary measure to contain the threat. The impact was immediate and operational — stores experienced supply-chain disruptions, empty shelves and logistic delays as the retailer worked to bring systems back online.
Soon after, the Co-op publicly acknowledged that personal data relating to its entire 6.5 million-member base had been accessed and stolen by the attackers. Although no financial account or transaction data was confirmed to have been compromised, the sheer scale of membership-data exposure represents one of the largest retail breaches in the UK in recent years.
For businesses worldwide, the incident serves as a vivid reminder that even established consumer-brands must be prepared for threats not just to data, but to the operational backbone of the organisation — including logistics, supply chains and store networks.
In this CMA Cyber Insights document, we unpack everything you need to know about the Co-op attack: the timeline of events, the underlying vulnerabilities, the business-impact and the key lessons for proactive cyber resilience. To explore how your organisation can apply these learnings — from incident-response readiness, third-party vendor management, to supply-chain segmentation — download our full Cyber Insights Document now.
Disclaimer: This document has been created with the sole purpose of encouraging discourse on the subject of cybersecurity and good security practices. Our intention is not to defame any company, person or legal entity. Every piece of information mentioned herein is based on reports and data freely available online. Cyber Management Alliance neither takes credit nor any responsibility for the accuracy of any source or information shared herein.
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