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Boannews reports SOCAR said on Nov 13 that it confirmed an external attacker used stolen internal credentials to abnormally access its internal management system, and activated emergency response .
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Boannews reports SOCAR said on Nov 13 that it confirmed an external attacker used stolen internal credentials to abnormally access its internal management system, and activated emergency response .
Boannews reports NHN Dooray announced on Nov 13 that attempted account access by an outsider was detected early that morning and emergency security measures were taken to protect private and public-sector customer accounts .
Yonhap reports South Korea's startups ministry said on Nov 13 that an AI solutions company supporting a government startup program detected a hacking attack on Wednesday (Nov 11) that compromised personal data of 20,028 people, including 818 program participants .
Boannews reports the Gwangju Dong-gu office said the admin page of its community-participation app "Uri Dongne do Banjang" lacked login authentication and was accessed from outside, leaking personal data of 2,101 people, confirmed on November 5 .
Boannews reports KB Capital said its vehicle lease asset management system was hit by a malicious attack confirmed on November 10, leaking personal data of 1,811 customers, partner-company staff and employees, 20 of them ordinary customers; the company said the system is unrelated to financial transactions .
SBS reports that the business website of Mirae Asset Global Investments, lead manager of about 38 trillion won of the roughly 88 trillion won public fund investment pool, was hacked last month .
KBS and Yonhap report that the information protection assessment support system of Korea's Financial Security Institute was hacked on November 9, 2026; the institute confirmed some data leaked, blocked the system and reported to the Financial Services Commission, and files from about 48 financial firms, some 130 in total, are estimated to have leaked .
Mirae Asset Securities announced that its internal groupware system, mi-global, suffered an external attack on November 5, leaking personal data of approximately 35,255 employees, including former and outsourced personnel .
eTomato said that on November 3, 2026 it confirmed an external hacker exploited a website security flaw to access its personal data database, leaking member information .
Boannews reports that Korean builder GS E&C confirmed unauthorized external access around 22:15 on October 28, 2026 to the community facility reservation system (formerly FMCS) of its Xi apartments, leaking resident data, and reported it to KISA and the Personal Information Protection Commission .
South Korean financial outlet Money Today said it confirmed a personal data leak from illegal external access on September 25, 2026, and a follow-up check on October 27 found 1,367 records leaked .
According to BleepingComputer, Japan Airlines said Amadeus notified it on October 23 of unauthorized access to its Passenger Service System between August 10, 2023 and September 23, 2026, exposing booking codes, names and flight details of about 92,000 JAL customers, plus emails, phones and passport numbers for about 2,000; ANA, Asiana and Korean Air also confirmed impact .
Mirae Asset Life said it detected anomalies in some systems on October 25, 2026, recognised a cyber intrusion, and confirmed a personal data leak early on October 26 after analysis with an outside firm .
According to Yonhap, security firm Oasis Security found data from two large Korean churches on an overseas attacker server; one was breached via a web shell on its ERP server with database admin rights obtained, while the other's groupware was accessed with previously obtained accounts and then its ERP via single sign-on .
Hana Bank said an illegal intrusion into its sales support system on September 30, 2026 led to the leak of information on 89 customers, confirmed on October 2 .
Weverse, the fan platform of South Korea's HYBE, said that on September 3 the Korea Internet & Security Agency told it an outside party had reported a vulnerability, and an inspection confirmed data of 422,584 accounts leaked .
According to DailySecu, the operator of South Korean delivery platform Fly confirmed a personal data leak and apologised, putting suspected leaked records at about 330,000 versus an unverified hacker claim of 47.
eBroadcasting, operator of 3PROTV, said it found in early August 2026 that an external actor illegally accessed its app and maliciously accessed other users' personal data .
S-Food Mall, which runs on NHN Commerce's Godomall platform, said Godomall's diagnostic management function was accessed without authorization, possibly exposing some customers' personal data .
According to Yonhap News TV, Day One Company, operator of Fastcampus and other online education brands, said a GitHub master account key was stolen and used for a first intrusion into its services on May 9, 2026 .