November 2025 Threat Trend Report on Ransomware
This report provides the number of affected systems confirmed during November 2025, DLS-based ransomware-related statistics, and notable ransomware issues in Korea and abroad. Below is a summary of some information. The statistics on the number of ransomware samples and affected systems are based on the diagnostic names assigned by
Ransom & Dark Web Issues Week 1, Novermber 2025
ASEC Blog publishes Ransom & Dark Web Issues Week 1, Novermber 2025 Black Shrantac Targets South Korean Cybersecurity and Network Solutions Company Japanese Major Online Retailer Listed as New Victim by Ransomware Group RansomHouse Data from Japanese ISP Leaked on DarkForums
Ransom & Dark Web Issues Week 4, October 2025
ASEC Blog publishes Ransom & Dark Web Issues Week 4, October 2025 Black Shrantac Lists a South Korean Cybersecurity Firm as Its Victim Qilin Targets South Korean Financial Intelligence Firm in Ransomware Attack Ransomware Attack Causes System Outage at Major Japanese Online Retailer Online
Ransom & Dark Web Issues Week 3, September 2025
ASEC Blog publishes Ransom & Dark Web Issues Week 3, September 2025 The emergence of a new ransomware group, BlackShrantac South Korean asset management firms listed as new victims of the Qilin ransomware group A South Korean broadcasting and telecom equipment manufacturer listed as
