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Co-op hackers stole 'significant' amount of customer data

  • Co-Op, a UK retail giant, suffered a cyberattack on April 22 that led to theft of customer data from one of its systems.
  • Threat actors used social engineering to reset an employee's password, enabling network breach and exfiltration of the Windows NTDS.dit file containing password hashes.
  • The attack, attributed to the DragonForce ransomware group and employing methods resembling those used against Marks & Spencer, resulted in the exposure of personal information belonging to many existing and former members.
  • Co-Op has confirmed that the compromised information included personal identifiers such as individuals' full names, communication information, and birth dates, but excluded login credentials, financial records, and purchase history, with forensic investigations still underway.
  • Co-Op responded by shutting down IT systems, rebuilding domain controllers, hardening security, and working with authorities, while warning customers and employees of sustained malicious attempts.
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Co-op issues update after hackers access ‘significant’ amount of customers' data

The Co-op has issued an update to its members after hackers accessed a 'significant' amount of customers' personal data, including contact details.

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BleepingComputer broke the news in on Friday, May 2, 2025.
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