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LNER Data Breach: A Cautionary Tale of Third-Party Supplier Vulnerabilities



A UK train operator has disclosed a data breach affecting customer contact details and past journey information, highlighting the importance of third-party supplier security. The incident serves as a reminder for organizations to prioritize security awareness and training to prevent similar breaches from occurring.

  • LNER disclosed a data breach exposing customer contact details and personal information.
  • The breach was attributed to an unauthorized access to files managed by a third-party supplier.
  • Customer contact details and past journey information were impacted, but bank info, payment card details, and passwords remained unaffected.
  • The organization emphasized that the incident did not impact train operations or ticket sales.
  • The LNER data breach highlights the importance of third-party supplier security and prioritizing security awareness and training.



  • UK train operator LNER (London North Eastern Railway) has disclosed a data breach, exposing customer contact details and other personal information, highlighting the importance of third-party supplier security.

    The incident was reported by LNER, stating that an unauthorized access to files managed by a third-party supplier had occurred. This breach impacted customer contact details and specific information about past journeys. However, it is essential to note that the breach did not affect bank information, payment card details, or passwords.

    LNER attributed the breach to the actions of a third-party supplier, but they have not disclosed any further information regarding the impacted supplier. The organization emphasized that the incident did not impact train operations or ticket sales. Instead, customers are being advised to exercise caution when receiving unsolicited messages requesting personal information and avoiding responding if unsure.

    The LNER data breach serves as a reminder of the importance of third-party supplier security. Organizations must ensure that their suppliers adhere to robust security standards to prevent similar incidents from occurring in the future. This includes implementing adequate controls, monitoring for suspicious activity, and maintaining transparent communication with customers and stakeholders.

    In addition to the LNER breach, other organizations have experienced similar incidents. For instance, SAP recently disclosed a patch day addressing four critical flaws, while Microsoft released security updates for September 2025, including two zero-day flaws. Furthermore, Supply chain attacks have been on the rise, as seen in the recent npm vulnerability.

    The increasing number of data breaches and supplier-related vulnerabilities underscores the need for organizations to prioritize security awareness and training. This includes educating employees about phishing attempts, implementing robust incident response plans, and maintaining a culture of transparency and accountability.

    In conclusion, the LNER data breach highlights the importance of third-party supplier security and the need for organizations to prioritize security awareness and training. By taking proactive measures to address these vulnerabilities, organizations can minimize the risk of similar incidents occurring in the future.



    Related Information:
  • https://www.ethicalhackingnews.com/articles/LNER-Data-Breach-A-Cautionary-Tale-of-Third-Party-Supplier-Vulnerabilities-ehn.shtml

  • https://securityaffairs.com/182128/data-breach/uk-train-operator-lner-london-north-eastern-railway-discloses-a-data-breach.html


  • Published: Fri Sep 12 06:03:02 2025 by llama3.2 3B Q4_K_M













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