Purpose and Scope The July 2026 Threat Trend Report on Ransomware summarizes major Korean & global ransomware issues based on statistics regarding the quantity of new ransomware samples, the number of compromised systems, and statistics on targeted businesses. Statistics on targeted businesses were compiled based on information published on DLS (Dedicated Leak Sites, also referred […]

Statistics on Malware Distributed to the Financial Sector In Attack Stage 1, phishing (a technique that tricks users into opening malicious links or attachments) had the highest rate at 1.7, Down from 2.3 The previous month. In Attack Stage 2, Dropper/Downloader (a type that downloads additional malware) was the most prevalent at 1.7, Up from […]

Content This report summarizes the distribution channels, number of Infostealers, number of detections, and target companies that were disguised as Infostealers collected during the month of July 2026. It was compiled based on results from AhnLab SEcurity intelligence Center (ASEC)’s automated data collection system, email honeypots, and automated C2 analysis, as well as diagnostic logs […]

Purpose and Scope This report summarizes the quantity of ransomware samples collected, the number of affected systems, statistics on targeted businesses, and major Korean & global issues during the month of June 2026. Statistics on targeted businesses were compiled based on information posted on DLS (Dedicated Leak Sites) operated by ransomware groups, which publish details […]

Statistics on Malware Distributed to the Financial Sector In the June threat analysis for the financial sector, phishing was the most prevalent attack method in Attack Stage 1, while droppers/downloaders (distribution tools that download additional malware) were the most prevalent in Attack Stage 2. Infostealers were identified in the third attack stage, indicating that multi-stage […]

Contents This report summarizes the distribution channels, number of Infostealers, number of detections, and information on companies targeted by new Infostealers collected during June 2026. The collected samples were obtained through an automated data collection system, an email honeypot system, and an automated malware C2 analysis system operated by AhnLab SEcurity intelligence Center (ASEC). Purpose […]

Purpose and Scope The June 2026 Threat Trend Report on APT Groups summarizes the trend of state-sponsored threat groups actively incorporating generative AI, cloud services, OAuth tokens, and commercial MaaS (Malware-as-a-Service) platforms into their attack operations. A key finding is that the scope of attacks has expanded beyond traditional Malware infections to include account and […]

Recently, the AhnLab SEcurity intelligence Center (ASEC) identified a case of phishing emails that disguise themselves as payment confirmation notices. These emails impersonate employees of a specific company in Korea and trick recipients into opening a malicious XLS file attached to the email, which is disguised as a payment confirmation notice.   [Figure 1] Body […]

The AhnLab SEcurity intelligence Center (ASEC) recently confirmed that phishing emails disguised as project proposals are being circulated. The body of the email pretends to request that the proposal and confirmed delivery schedule be submitted as soon as possible, and prompts the recipient to download the attached compressed file.   [Figure 1] Phishing email body […]

Content In the second quarter of 2026, the AhnLab SEcurity intelligence Center (ASEC) collected and analyzed attack logs targeting poorly managed Linux SSH servers through honeypots. The scope of the analysis covers attack sources that progressed to executing actual malware installation commands, as well as statistics on the malware used in those attacks. Purpose and […]

Contents The AhnLab SEcurity intelligence Center (ASEC) analyzed attack logs from the second quarter of 2026 targeting MS-SQL server and MySQL server installations on Windows. This report summarizes the damage status, attack status, and the classification of the malware and tools used in the attacks. Purpose and Scope The targets are MS-SQL servers and MySQL […]

Content In the second quarter of 2026, the AhnLab SEcurity intelligence Center (ASEC) compiled an analysis of the current attack status for poorly managed Windows web servers and classified the malware used in these attacks. The targets were Internet Information Services (IIS) web servers and Apache Tomcat web servers running in Windows environments. Purpose and […]

Summary of Vulnerability Trends for the Second Quarter of 2026 A total of 20,701 new CVEs were reported in the second quarter of 2026. Of these, 2,317 were “Critical” vulnerabilities with a CVSS score of 9.0 Or higher, accounting for 11.2% Of the total. Medium- and high-risk vulnerabilities, including those rated “High,” accounted for 51.7% […]

Overview. The second quarter of 2026 was marked by a notable increase in actual exploits that targeted public assets, identities, and AI stacks. The number of CISA KEV listings reached 75, an increase of approximately 27% compared to the same period in 2025. Primary targets included web and server applications, endpoints, network perimeter devices, and […]

Purpose and Scope This report summarizes the quantity of new ransomware samples collected during the month of May 2026, the number of affected systems, statistics on targeted businesses, and major Korean & Global ransomware issues. Statistics on samples and affected systems are based on AhnLab’s detection names, while statistics on targeted businesses are aggregated based […]

Statistics on Malware Distributed to the Financial Sector In Attack Stage 1 targeting the financial sector in May 2026, phishing had the highest score at 2.3. This is the highest figure since December 2025, indicating that Initial Breach attempts are increasingly centered on phishing. In Attack Stage 2, Dropper/Downloader had the highest rate at 1.4, […]

Content This report summarizes the distribution channels, number of infostealers, number of detections, target companies, and execution types of new infostealers collected during the month of May 2026. The collected samples were analyzed based on data from AhnLab SEcurity intelligence Center (ASEC)’s automated data collection system, Email Honeypot system, automated malware C2 analysis system, and […]

Purpose and Scope The May 2026 APT Trends report identified supply chain attacks, developer environment attacks, automated Initial Breach, and exploitation of runtime environments as key developments. Lazarus, Famous Chollima, Gamaredon, MuddyWater, and Nimbus Manticore are of particular concern. Status of Major APT Groups by Region North Korea The Lazarus group exploited Git Hooks (Git […]

WormGPT, which emerged in June 2023, has brought a paradigm shift to the cybercrime ecosystem. generative AI has lowered the barrier to entry for attacks, and AI-powered hacking tools are rapidly proliferating in both paid subscription services and free open source. furthermore, AI is evolving beyond the creation of attack tools to the management of […]

Statistics on Malware Distributed to the Financial Sector attack Stage 1 Phishing, Attack Stage 2 Backdoor-Downloader-Dropper, and Attack Stage 3 Infostealer-Ransomware were identified as the top malware in the financial sector. The actual distribution files were identified based on MD5 Hash, and it was explained that there may be many variants of the same family. […]