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Asahi Admits Ransomware Attack May Have Exposed Data of Almost 2 Million People


Asahi, a leading Japanese brewery and beverage company, has admitted that its September ransomware attack may have exposed sensitive personal data belonging to almost 2 million people. The breach highlights the importance of robust cybersecurity measures and the need for organizations to prioritize data protection.

  • Asahi acknowledged that its September ransomware attack may have exposed sensitive personal data belonging to almost 2 million people.
  • The breach affected employees, customers, and their family members, compromising personal data including names, addresses, phone numbers, email addresses, and date of birth.
  • The attack had a significant impact on Asahi's annual earnings cadence, with the company delaying its full-year earnings report for over 50 days.
  • Asahi took steps to restore systems cautiously and in phases, but its decision to push its earnings report into 2026 reflects a sobering assessment of the breach's impact.
  • The incident highlights the importance of robust cybersecurity measures and the need for organizations to prioritize data protection.


  • Asahi, a leading Japanese brewery and beverage company, has finally acknowledged that its September ransomware attack may have exposed sensitive personal data belonging to almost 2 million people. The breach, which was initially disclosed on September 29, saw the Qilin ransomware gang claim responsibility for stealing some 27 GB of internal files, including employee records, contracts, financial documents, and other confidential assets.

    In its latest update, Asahi revealed that the attack may have compromised personal data from 1.525 million people who contacted its customer service centers, 114,000 external contacts who received condolence or congratulatory telegrams, 107,000 current or former employees, and 168,000 of their family members. The exposed data includes names, addresses, phone numbers, email addresses, and in some cases date of birth and gender.

    The attack began when attackers gained unauthorized access to a Group datacenter facility in Japan, deploying ransomware on multiple live servers and connected PCs. This forced Asahi to isolate the affected systems within hours but ultimately led to a broader operational suspension, with order processing systems shut down, shipments paused, and customer service lines silenced.

    The disruption had a significant impact on Asahi's annual earnings cadence, with the company delaying the release of its full-year earnings report for the fiscal period ending December 31 by more than 50 days past the financial year close. The delay suggests that full operational normalization may take longer than planned, with logistics reportedly not fully restored until February.

    Asahi has taken steps to restore systems cautiously and in phases, with product shipments resuming in stages as isolated systems are validated as secure. However, the company's decision to push its earnings report into 2026 reflects a more sobering assessment of the breach's impact.

    The attack serves as a stark reminder of the importance of robust cybersecurity measures and the need for organizations to prioritize data protection. Asahi's experience highlights the potential consequences of even seemingly minor vulnerabilities in network equipment, emphasizing the need for vigilance and proactive steps to prevent similar breaches in the future.

    In light of this incident, Asahi has pledged to notify individuals whose data is confirmed to have been compromised, a promise that underscores the company's commitment to transparency and accountability. While the scale of the breach is daunting, it serves as an opportunity for Asahi – and other organizations – to reassess their cybersecurity posture and implement more robust measures to safeguard sensitive information.

    The incident also raises questions about the effectiveness of current cybersecurity frameworks and regulations in preventing such breaches. It highlights the need for ongoing evaluation and improvement of these frameworks to ensure they remain adequate in addressing emerging threats and vulnerabilities.

    Ultimately, Asahi's acknowledgment of the potential data exposure serves as a cautionary tale for organizations across various industries. By prioritizing cybersecurity and taking proactive steps to mitigate risks, companies can minimize the impact of such breaches and reduce the likelihood of similar incidents in the future.

    In conclusion, Asahi's admission that its ransomware attack may have exposed sensitive personal data of almost 2 million people underscores the gravity of this incident and its potential consequences. By prioritizing cybersecurity and taking proactive steps to safeguard sensitive information, organizations can minimize the impact of such breaches and reduce the likelihood of similar incidents in the future.



    Related Information:
  • https://www.ethicalhackingnews.com/articles/Asahi-Admits-Ransomware-Attack-May-Have-Exposed-Data-of-Almost-2-Million-People-ehn.shtml

  • https://go.theregister.com/feed/www.theregister.com/2025/11/27/asahi_ransomware_numbers/

  • https://www.msn.com/en-us/money/news/asahi-admits-ransomware-gang-may-have-spilled-almost-2m-peoples-data/ar-AA1RgVkH

  • https://www.theregister.com/2025/11/27/asahi_ransomware_numbers/


  • Published: Thu Nov 27 08:32:04 2025 by llama3.2 3B Q4_K_M













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