ASEC Blog publishes Ransom & Dark Web Issues Week 3, October 2025 New ransomware groups Kyber, Nasir Security, Kryptos, Tengu, and VFVCT (V For Vendetta Cyber Team) have emerged. Data from a South Korean website-building platform is being sold on the cybercrime forum DarkForums. The ransomware group Qilin has […]| ASEC
ASEC Blog publishes Ransom & Dark Web Issues Week 4, September 2025 Personal information of Spanish politicians and public officials shared on DarkForums. A university application platform in South Korea listed as a new victim by the ransomware group Kill Security. Data from a South Korean shipbuilding company being […]| ASEC
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 a new victim of the […]| ASEC
In June 2025, a new ransomware group known as Kawa4096 emerged, targeting multinational organizations across various sectors, including finance, education, and services. Their attacks have affected companies in multiple countries, notably Japan and the United States. Although there is currently no public information confirming whether they operate as a Ransomware-as-a-Service (RaaS) or collaborate with other threat groups, […]| ASEC
BlackLock is a relatively new ransomware group that is believed to have been established around March 2024. Their existence was publicly revealed in June 2024 when the Dedicated Leak Site (DLS) was identified. At that time, information on multiple affected companies had already been posted, suggesting that the gang had been active in secret for […]| ASEC
ASEC Blog publishes Ransom & Dark Web Issues Week 2, September 2025 Financial Institution Data from Poland and Central Europe Listed for Sale on DarkForums Gunra Ransomware Targets Korean Manufacturer Emergence of Four New Ransomware Groups: Obscura, Yurei, The Gentlemen, Radar| ASEC
BlackNevas has been continuously launching ransomware attacks against companies in various industries and countries, including South Korea. This post provides a technical analysis on the characteristics, encryption methods, and reasons why BlackNevas encrypts files in a way that makes them impossible to decrypt. It is hoped that this post will provide insights for defending against […]| ASEC
The CyberVolk ransomware, which first emerged in May 2024, has been launching attacks on public institutions and key infrastructures of various countries, posing a continuous threat. The ransomware is particularly notable for its pro-Russia nature, as it primarily targets anti-Russian countries, making it a geopolitically significant cyber threat. This post provides a technical analysis of […]| ASEC
Warning About NightSpire Ransomware Following Cases of Damage in South Korea ASEC| ASEC
Ransom & Dark Web Issues Week 3, August 2025 ASEC| ASEC
Ransom & Dark Web Issues Week 1, July 2025 ASEC| ASEC
Ransomware Disguised as Password Cracker (Extension Changed to .NS1419) ASEC| ASEC