보안 뉴스 업데이트
Cyber Security News Update
Every day at 8:00 a.m. KST — selected hacking and cybersecurity news from Korea and around the world, summarized with links to the original articles.
2026-10-29 (Thu) Morning edition
Today's Top 10
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Bithumb Internal Groupware Hacked, Employee Data Leaked
An unauthorized external party accessed Bithumb's internal mobile groupware system, Daou Office, leaking employee personal information. The company is also investigating whether customer data was affected and has reported the incident to KISA and the Personal Information Protection Commission.
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Ransomware Attack on US UNM Health Disrupts Surgeries, ER
The University of New Mexico Health system suffered a ransomware attack, forcing emergency patients to be diverted to other hospitals and leading to canceled surgeries and outpatient visits. A new ransomware group calling itself 'Byod' claimed to have stolen data from about 36,000 systems, including patient records and staff Social Security numbers.
BleepingComputer · Read original (opens in new window) ↗
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Sony Subsidiary So-net Leaks 2.58 Million Customer Records
The subscriber database of Sony's Japanese internet service providers So-net and plala was breached, exposing roughly 2.58 million records including names, phone numbers, and email addresses. The breach also exposed 54,401 email account passwords and some customers' account information.
Help Net Security · Read original (opens in new window) ↗
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Personal Data of Over 40,000 US DHS Employees Leaked
A hacker who had obtained personal information on more than 40,000 US Department of Homeland Security employees from a previously undisclosed breach has published the data online. The leaked material was also shared via the nonprofit group DDoSecrets.
TechCrunch · Read original (opens in new window) ↗
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Hotelstory Hack Exposes Reservation and Card Information
An attacker used exposed account credentials from some accommodations on the booking platform Hotelstory to gain unauthorized access to reservation data, leaking customer names, contact details, booking details, and some card-related information. Concerns have been raised that the leaked data could be used for impersonation phishing attacks.
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University of Copenhagen Breach Exposes Data of 525,000 People
The exam system environment at the University of Copenhagen in Denmark was hacked, leaking the names, national ID numbers, phone numbers, and emails of 525,000 students and staff. Access PIN codes for 20,000 staff and students were also exposed, leading to restricted access to some campus facilities.
Help Net Security · Read original (opens in new window) ↗
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Japan's GMO Urges Full PC Shutdown Amid Ransomware Threat
GMO Internet's VPS service 'Onamae Desktop Cloud' was breached, with attackers demanding a ransom of 800 million yen (about 50 billion won), which the company refused to pay. After attackers threatened to publish customer data and deploy ransomware, GMO urgently advised customers to power off their PCs and disconnect from the internet.
BleepingComputer · Read original (opens in new window) ↗
Korea — Hacking News
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Bithumb Internal Groupware Hacked, Employee Data Leaked
An unauthorized external party accessed Bithumb's internal mobile groupware system, Daou Office, leaking employee personal information. The company is also investigating whether customer data was affected and has reported the incident to KISA and the Personal Information Protection Commission.
-
Hotelstory Hack Exposes Reservation and Card Information
An attacker used exposed account credentials from some accommodations on the booking platform Hotelstory to gain unauthorized access to reservation data, leaking customer names, contact details, booking details, and some card-related information. Concerns have been raised that the leaked data could be used for impersonation phishing attacks.
Global — Hacking News
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Ransomware Attack on US UNM Health Disrupts Surgeries, ER
The University of New Mexico Health system suffered a ransomware attack, forcing emergency patients to be diverted to other hospitals and leading to canceled surgeries and outpatient visits. A new ransomware group calling itself 'Byod' claimed to have stolen data from about 36,000 systems, including patient records and staff Social Security numbers.
BleepingComputer · Read original (opens in new window) ↗
-
Sony Subsidiary So-net Leaks 2.58 Million Customer Records
The subscriber database of Sony's Japanese internet service providers So-net and plala was breached, exposing roughly 2.58 million records including names, phone numbers, and email addresses. The breach also exposed 54,401 email account passwords and some customers' account information.
Help Net Security · Read original (opens in new window) ↗
-
Personal Data of Over 40,000 US DHS Employees Leaked
A hacker who had obtained personal information on more than 40,000 US Department of Homeland Security employees from a previously undisclosed breach has published the data online. The leaked material was also shared via the nonprofit group DDoSecrets.
TechCrunch · Read original (opens in new window) ↗
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University of Copenhagen Breach Exposes Data of 525,000 People
The exam system environment at the University of Copenhagen in Denmark was hacked, leaking the names, national ID numbers, phone numbers, and emails of 525,000 students and staff. Access PIN codes for 20,000 staff and students were also exposed, leading to restricted access to some campus facilities.
Help Net Security · Read original (opens in new window) ↗
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Japan's GMO Urges Full PC Shutdown Amid Ransomware Threat
GMO Internet's VPS service 'Onamae Desktop Cloud' was breached, with attackers demanding a ransom of 800 million yen (about 50 billion won), which the company refused to pay. After attackers threatened to publish customer data and deploy ransomware, GMO urgently advised customers to power off their PCs and disconnect from the internet.
BleepingComputer · Read original (opens in new window) ↗
Updated every day at 8:00 a.m. KST with selected hacking and cybersecurity news from Korea and abroad. Summaries are AI-generated — please check the original articles. Copyright of each article belongs to its publisher.