business continuity
2 articles with this tag
Osaka General Medical Center ransomware (2022) — a contractor's VPN as the way in, and hospital BCP
The way in was not the hospital itself but a meal-service contractor's remote-maintenance VPN device — unpatched, and reachable using leaked credentials — the investigation committee found. Because the hospital and contractor were constantly connected, and because servers/PCs shared passwords, users held broad admin rights, EMR servers lacked antivirus, and the network wasn't segmented, the encryption spread across the EMR system. Outpatient care, surgery, and emergency intake were restricted; full recovery took over two months. Defend by treating contractor links as your own attack surface: patch internet-facing VPNs, end credential reuse, least privilege, segment, and build a medical BCP (paper fallback, tested restore).
KADOKAWA / Niconico Ransomware (2024) — Why It Spread Company-Wide, and Network Segmentation & BCP
The way in was described as phishing that stole an employee's credentials; from there the internal network was breached and ransomware ran, taking down many of the group's services (including Niconico) for months and leaking ~250,000 people's data. Reporting and analysis attribute the company-wide spread to systems of very different criticality sharing the same network — reportedly with too little segmentation. Defend by segmenting the network by criticality, using phishing-resistant authentication, and preparing business continuity (BCP) and recovery.