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Major Cyber Attacks Hit UK Retail Sector, Costing Millions

Major Cyber Attacks Hit UK Retail Sector, Costing Millions

First seen 12 Oct 2026, 23:30 UTC • •
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ThreatCluster AI
ThreatCluster •October 13, 2026 at 00:31 UTC
  • •Harrods, Co-op, and M&S were targeted in recent cyber attacks.
  • •M&S estimated a £300 million loss due to operational disruptions.
  • •The incidents have prompted a reevaluation of cyber insurance practices.

The UK retail sector has faced significant cyber attacks affecting major brands, including Harrods, Co-op, and Marks & Spencer (M&S). Harrods reported an attempted hacking incident, while Co-op confirmed the theft of large amounts of customer and staff data. M&S's breach led to a £300 million loss in operating profit, forcing the retailer to revert to manual stock management across its stores. The attacks have raised alarms in the cyber insurance market, prompting calls for improved supply chain assessments. The ongoing impact on customer experience and brand reputation remains severe, with M&S's online services still non-operational a month after the attack. The situation highlights the urgent need for enhanced cybersecurity measures across the retail sector.

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Timeline

2026-10-01
Harrods reports attempted hacking attack
Harrods disclosed an attempted cyber attack, details of which remain limited.
Insurance Business
2026-10-01
Co-op confirms data theft
Co-op reported that threat actors stole significant amounts of customer and staff data from its systems.
Insurance Business
2026-10-01
M&S breach leads to operational losses
M&S revealed the cyber attack would cost approximately £300 million in lost operating profit.
Insurance Business

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Common questions

What brands were affected by the attacks?
Harrods, Co-op, and Marks & Spencer were notably impacted by recent cyber attacks.
What is the estimated cost of the M&S breach?
Marks & Spencer estimated the breach would cost approximately £300 million in lost operating profit.
Are there ongoing operational issues for M&S?
Yes, M&S's online services remain non-operational a month after the attack.