Marks & Spencer Hit by Ransomware: 46 Days of Online Sales Shutdown

Cybersecurity

10.05.2025

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Marks & Spencer ransomware attack

UK retail giant Marks & Spencer was hit by a major ransomware attack in April 2025 by the Scattered Spider gang.

Attackers first compromised M&S's IT helpdesk through social engineering, then encrypted systems and exfiltrated customer data including names, birthdates, addresses, and purchase histories.

M&S was forced to halt online orders for 46 days, with Deutsche Bank estimating an immediate 30 million pound profit loss. The attack wiped roughly 750 million pounds off M&S's market value.

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