Marks and Spencer (M&S) has confirmed that customer data was stolen in a cyberattack that occurred last month, significantly impacting operations across its 1,400 stores. The attack, identified as a ransomware incident, took place on April 22, 2025, and forced the company to stop accepting online orders temporarily. M&S is currently conducting an investigation into the breach and has informed the public about the sensitive personal information that was compromised.
According to sources, the cyberattack was executed by affiliates of the DragonForce ransomware group, utilizing Scattered Spider social engineering techniques to breach the retailer’s network. During the attack, VMware ESXi virtual machines hosted on company servers were encrypted, leading to significant disruptions in service and operations.
M&S CEO Stuart Machin announced the breach in a letter posted on the retailer’s official Facebook page. He reassured customers that, while personal information has been taken, there is no evidence that the data has been shared, and it does not include any usable payment details or account passwords. Nevertheless, all customers with active accounts will be required to reset their passwords upon their next login attempt.
An FAQ page released by M&S has outlined the types of data that have been exposed during the breach, including full names, email addresses, home addresses, phone numbers, and other personal information. Although the company has stated that payment card details are masked in accordance with PCI guidelines, they advised customers to remain vigilant against potential phishing attacks.
While M&S has temporarily paused its Sparks offers amid the investigation, there have been no updates on the resumption of online order processing or other business operations at this time. The company has committed to notifying all impacted customers and providing further details as they become available.