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According to FTV News, Kang Chiao International School's Linkou campus confirmed to parents that its network systems were breached, and several parents and staff received threatening emails signed by the "Osiris ransomware group" .
According to iThome, servers of NETivism, the vendor behind netiCRM, a donation management system used by Taiwanese nonprofits, were breached by an external attacker, and more than 20 organizations including the Awakening Foundation, Citizen Congress Watch, the Judicial Reform Foundation and Taiwan Tongzhi Hotline have issued notices .
NTT Data announced on Nov 9 that the sign-up service for Sumitomo Life's standalone Vitality programs, which it builds and operates under contract, was accessed by a third party and personal data of about 80,000 users leaked .
BleepingComputer reports that researcher Sean Bales publicly disclosed more than 30 N-able N-central vulnerabilities on Nov 8 without notifying the vendor and released proof-of-concept exploits in a GitHub repository called Able2Shell, the most critical chain using an unauthenticated XXE flaw to run commands on the server and create an admin account .
Emerging-market company Acer Medical (6857) said in a November 6 material announcement that other customers of Cyberbiz, the outsourced online store vendor of its subsidiary Acer Health, had suffered unauthorized database access, and that Acer Health suspended its online store as a precaution although it had not been notified of a similar issue .
Acer group firms 宏碁智新 (7794) and 倚天酷碁 (2432) said in Nov 6 filings that their e-commerce vendor Cyberbiz suffered unauthorized access to part of its database and provided the currently known affected data scope that day .
Weblink International (6776) said in a Nov 6 filing that some clients of Cyberbiz, the outsourced provider of its subsidiary Haoyang's online store, suffered unauthorized database access; it had not yet been notified but suspended the store as a precaution .
According to The Record, cybersecurity media reported in November 2026 that blockchain analytics firm Chainalysis experienced a security breach .
According to iThome, on the evening of November 3, OTC-listed Microbio Co.
MS&AD group insurers Mitsui Sumitomo Insurance and Aioi Nissay Dowa said on Nov 6 that unauthorized access to their policyholder portal was detected on the night of Nov 2, related services were halted late on Nov 3, and the investigation confirmed a data leak .
Kyocera Communication Systems (KCCS) issued a second update on November 6 stating that a web server operated by its subsidiary MOTEX suffered unauthorized access, potentially exposing customer information including company names, personal names, email addresses, and phone numbers .
BleepingComputer reports that Russian cloud and hosting provider Beget said an attacker gained access to the management systems of its entire architecture on the night of Nov 1 and deployed malware that erased server data, after which Beget disconnected all servers .
On October 30, Taiwan Broadband Communications (TBC) issued a material information filing on MOPS stating that IT systems of the company and its subsidiary were attacked by unknown external hackers, resulting in malicious encryption of files on certain servers and affecting some internal operational systems .
According to ITmedia, Iris Plaza announced on November 5 that following unauthorized access to an external cloud service used by the company, personal data of approximately 7.
PayCloud Holdings subsidiary Arara said its email delivery service Arara Message suffered unauthorized access; it first disclosed the incident on Oct 29, and its Nov 6 third report put the deduplicated number of taken (or possibly taken) email addresses at 81,329,467 .
Railway said the attack ran from October 20 to 22 and aimed to obtain AI provider API keys for distillation attacks, interrupting builds and deployments .
GMO Internet said that on October 20 it confirmed a third party had planted a malicious program on some customer servers of its Onamae.
Japan's H2O Retailing and its subsidiary Hankyu Hanshin Department Stores said on October 19 that a third party gained unauthorized access to the customer management system via the department stores' booking site on October 16, and that unauthorized access was also found the next day on the official shopping site HANKYU HANSHIN E-STORES and on Remo Order, after which the company shut the sites down .
Dutch retail group Ahold Delhaize announced on October 12, 2026, that it had detected a security issue within its network and taken precautionary measures, including taking certain systems offline to protect its infrastructure, while noting that physical stores remained open .
An alert from France's CERT-FR warned of widespread compromises affecting Danfoss AK-SM/AK-SC and Copeland/Dixell XWEB refrigeration remote controllers, with attackers primarily exploiting internet-exposed management interfaces .