Japan
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Washington Hotel discloses ransomware infection that exposed business data
Washington Hotel disclosed a February 13, 2026 ransomware attack that compromised servers and exposed business data. IT staff disconnected affected servers and outside experts were engaged. Customer records appear unlikely to be exposed, investigation continues.
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Nikkei says Slack breach exposed personal information of more than 17,000 users
Nikkei said a Slack compromise exposed names, email addresses and chat histories for 17,368 people after attackers used credentials stolen from a malware-infected employee computer; the publisher voluntarily notified Japan’s data protection regulator and said no source-related material was affected.
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Hezi Rash hacktivist group tied to hundreds of DDoS attacks, Check Point reports
Hezi Rash, a Kurdish nationalist hacktivist group founded in 2023, has been linked by Check Point to about 350 DDoS attacks between August and October 2025 targeting sites in Japan, Turkey, Israel, Iran, Iraq and Germany; analysts say the campaigns are ideologically driven and focus on disruption.
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Muji halts online sales in Japan after ransomware attack on logistics partner Askul
Muji took its online store offline in Japan after a ransomware attack at logistics partner Askul disrupted orders and shipping; Askul said it suspended operations while investigating possible data leakage, and Muji is notifying affected customers.
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Asahi suspends Japan operations after cyberattack
Asahi Group Holdings said a cyberattack has forced a halt to ordering, shipping and customer service operations in Japan; the company is investigating and said there is no confirmed data leakage so far but gave no recovery timeline.
