Asahi cyber attack spirals into massive data breach impacting almost 2 million people - Bitdefender

INDUSTRY NEWS 2 min read Asahi cyber attack spirals into massive data breach impacting almost 2 million people Graham CLULEY December 02, 2025 Asahi Group Holdings, the makers of the popular Japanese beer Asahi Super Dry, has confirmed that the ransomware attack that disrupted its operations in late September also saw a significant data breach that affects more than 1.5 million customers and approximately 275,000 current and former employees and their families. The cyber attack, which occurred on 29 September 2025 and was initially described publicly as a "system failure", was later confirmed to be orchestrated by the Qilin ransomware group, and resulted in the paralysis of critical systems responsible for the ordering and shipping of beer across Japan, and forced Asahi to temporarily suspend major parts of its operations. In a statement published on 27 November, Asahi shared details of a nearly two-month forensic investigation into the security incident. The best way to avoid online threats? Make sure they never reach you. Try Bitdefender Premium Security 30 days free. Try It Free The company reported that around 1.52 million customers who had previously contacted the company's customer-service centres may have had their personal information accessed during the attack. The company further revealed that the data of roughly 114,000 external contacts - including recipients of "congratulatory or condolence telegrams" — and about 275,000 employees, former employees, retirees, and their family members may have also been breached. According to Asahi, the information potentially exposed includes names, addresses, telephone numbers, email addresses, and in some cases dates of birth and gender. The company emphasized that it has not currently seen any evidence that the stolen data has been published online, and insisted that it declinedto pay a ransom to its attackers. The impact of the attack on Asahi's operations was significant. Production at multiple factories was interrupted, and key systems used to manage logistics and sales were forced offline. Although beer production resumed within a week, distribution problems persisted and resulted in widespread shortages across Japan. Reuters reports that Asahi's domestic beverage and food divisions saw a 10-40% decline in sales in October compared with the previous year. Asahi states that it is continuing to reinforce its cybersecurity systems in the wake of the attack, and improve its resilience. Individuals whose data has been confirmed as exposed will apparently be notified. One presumes that that won't be via a "telegram of condolence." The company now faces a long road as it works to rebuild operations, notify those affected, and reinforce the IT systems that allowed the breach to occur in the first place. For millions of customers and employees, the consequences may take far longer to resolve than the beer shortages that made headlines. For the millions of affected individuals, the immediate concern shifts from beer shortages to the potential for identity theft and targeted phishing campaigns. Security experts warn that even though the stolen data hasn't surfaced online yet, it could be sold on underground forums or weaponized months or even years from now. TAGS industry news AUTHOR Graham CLULEY Graham Cluley is an award-winning security blogger, researcher and public speaker. He has been working in the computer security industry since the early 1990s. View all posts RIGHT NOW TOP POSTS FAMILY SAFETY How to Outsmart AI Voice Scammers Pretending to Be Your Family March 03, 2026 SCAM HOW TO Scammer phone number lookup. How to check if a phone number is a scam April 19, 2024 SCAM DIGITAL PRIVACY HOW TO How scammers gain access and hack your WhatsApp account and what you can do to protect yourself May 01, 2024 MOBILE SECURITY Signs your phone is being tracked without spy apps March 16, 2026 FOLLOW US ON SOCIAL MEDIA YOU MIGHT ALSO LIKE INDUSTRY NEWS Threat Actors Use Fake DeepSeek Websites in Malicious Campaigns Vlad CONSTANTINESCU February 07, 2025 INDUSTRY NEWS Pro-Israel Hacker Group Destroys $90 Million in Cryptocurrency in Iran's Largest Crypto Exchange Silviu STAHIE June 19, 2025 INDUSTRY NEWS Russian Crypto Mixing Bosses Face Decades in Prison Filip TRUȚĂ January 13, 2025 BOOKMARKS You have no bookmarks yet. Tap to read it later.