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[Joint Cybersecurity Advisory] Operation Double Barrel (The Relationship Between a State-Sponsored Threat Actor and the Gunra Ransomware Group)
This technical analysis report was prepared as part of the joint cybersecurity advisory titled “Advisory on Cyberattacks Targeting Korean Citizens and Businesses by State-Sponsored Hacking Groups” issued by the Republic of Korea’s National Intelligence Service (NIS), National Police Agency (NPA), Korea Internet & Security Agency (KISA), and Financial Security Institute
June 2026 Threat Trend Report on APT Attacks (South Korea)
Content AhnLab monitored domestic APT (Advanced Persistent Threat) attacks—which are conducted covertly and persistently—using its own infrastructure. This report summarizes the classification and statistics on domestic APT attacks identified in June 2026 and describes the capabilities of each type of APT attack. Purpose and Scope Most of the APT attacks
May 2026 Threat Trend Report on APT Attacks (South Korea)
Overview AhnLab monitored APT (Advanced Persistent Threat) attacks—covert, sustained targeted attacks—using its own infrastructure. This report summarizes the types and statistics on domestic APT attacks identified during the month of May 2026 and discusses the characteristics of each type as well as AhnLab Response Overview. Trends of APT Attacks in
May 2026 Dark Web Threat Actor Trend Report
Notes the May 2026 Dark Web Threat Actor Trend Report summarizes the trends of threat actors and hacktivists operating on the deep web and dark web. some statements are not factually verifiable. Major Issues hacktivist activity targeting the South Korean Region was concentrated. some hacktivist groups claimed DDoS attacks against
April 2026 Threat Trend Report on APT Attacks (South Korea)
Overview ahnLab utilized its infrastructure to monitor Advanced Persistent Threat (APT) attacks on targets in Korea. this report summarizes the classification, statistics, and features of each type of APT attacks identified in Korea during the month of April 2026. Trends of APT Attacks in South Korea most of the APT
Ransom & Dark Web Issues Week 1, May 2026
ASEC Blog publishes Ransom & Dark Web Issues Week 1, May 2026 Guatemalan Government Agency Data Sold on DarkForums BlackWater Ransomware Attack Targets Chinese Auto Parts Manufacturer Japanese Fintech Firm Suffers Unauthorized GitHub Access
GitHub Enterprise Server Security Update Advisory (CVE-2026-3854)
Overview A security update has been released for CVE-2026-3854, a remote code execution vulnerability in GitHub Enterprise Server. users of the affected products should update to the latest version. Affected products GitHub Enterprise Server 3.14.25 and earlier. GitHub Enterprise Server 3.15.20 and earlier. GitHub Enterprise Server 3.16.16 and earlier. GitHub
March 2026 APT Attack Trends Report (Domestic)
Overview ahnLab monitored APT attacks against domestic targets during the month of March 2026. most of the attacks were launched through Spear Phishing emails sent after reconnaissance of specific targets. APT Attack Trends in Korea the majority of distribution vectors were shortcut (.lnk) files, with LNK-based attacks dominating. Type A
February 2026 APT Attack Trends Report (South Korea)
Overview. ahnLab monitored APT attacks against domestic targets during the month of February 2026 through its infrastructure. this report summarizes the classification, statistics, and features of each type of domestic APT attacks identified during the period. APT Domestic Attack Trends. we found that most of the infiltrations were carried out
January 2026 Threat Trend Report on APT Attacks (South Korea)
Overview Ahnlabs is monitoring APT (Advanced Persistent Threat) attacks in South Korea by utilizing their own infrastructure. This report covers the classification, statistics, and features of APT attacks in South Korea that were identified in January 2026. Figure 1. Statistics of APT attacks in South Korea in January 2026
