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KR·HNThe Hacker News

A previously undocumented Linux toolkit has been found compiled directly into the trojanized HAProxy load balancers of two South Korean organizations, where it intercepted web traffic and served altered pages to selected visitors. The attackers named the implant ted in debug strings left in the binary. It is not a HAProxy vulnerability, and installing it requires code execution on the host and

KR·AAAhnLab ASEC

The AhnLab SEcurity intelligence Center (ASEC) recently identified attack cases that exploited Radmin and UltraVNC. Although the Initial Intrusion method remains unknown, the attackers installed Radmin—a remote control tool—and then installed UltraVNC. The threat actors exploited the remote control tools to gain control of the infected systems and installed Netch and CCProxy to use the […]

KR·AAAhnLab ASEC

The AhnLab SEcurity intelligence Center (ASEC) recently identified the LegionLoader malware, which is currently being distributed via the ClickFix method. There are two main distribution methods identified so far; both involve tricking users into visiting a malicious URL and then prompting them to directly execute malicious PowerShell commands through a fake Cloudflare CAPTCHA screen. […]

KR·AAAhnLab ASEC

1. Overview The AhnLab SEcurity intelligence Center (ASEC) continuously monitors various threats targeting Linux environments. Techniques that modify the Linux kernel to conceal malware and signs of compromise have been used for a long time, and Syslogk is one such rootkit that operates in this manner. This document provides an analysis of the key features […]

KR·AAAhnLab ASEC

ASEC Blog publishes Ransom & Dark Web Issues Week 1, September 2026 ZaWoo Data Extortion Attacks Against Multiple Organizations Worldwide Black X Ransomware Attack on a South Korean Automotive Parts Manufacturer Internal Data of a South Korean Asset Management and Investment Firm Offered for Sale

KR·AAAhnLab ASEC

People who initially seem fine but tend to subtly avoid others as the relationship deepens or when conflicts arise—and who disappear when pressured—are commonly referred to as “avoidant types.” By repeatedly pulling away only to reappear, they drain the other person’s emotions and energy, ultimately undermining the relationship. The attack pattern of the recently […]

KR·AAAhnLab ASEC

Overview AhnLab monitored APT (Advanced Persistent Threat) attacks targeting entities in Korea using its own infrastructure. This report summarizes the classification, statistics, and functional characteristics for each type of domestic APT attacks identified during the month of July 2026. Trends of APT Attacks in South Korea Most APT attacks detected in South Korea were distributed […]

KR·DNDataBreaches.net

This is one of those headlines where our first thought was “Uh oh!” but then we read more and thought “Hmmm…” Ko Jae-woo reports: Seoul National University Hospital has not filed a mandatory cybersecurity disclosure for years, an investigation has found. While tertiary hospitals are generally required to submit such disclosures, the hospital is exempt... Source

KR·BLBleepingComputer

A breach at South Korea's government-backed startup platform exposed encrypted personal data after an encryption key was included in an API. Penta Security explains why encryption keys must be securely managed and kept separate from the data they protect. [...]

KR·AAAhnLab ASEC

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 […]

KR·AAAhnLab ASEC

Purpose and Scope The July 2026 Threat Trend Report on APT Groups summarizes the trend in which state-sponsored threat actors and financially motivated attackers are employing a combination of supply chain attacks, account takeovers, cloud breaches, and social engineering techniques. Key targets include Microsoft 365, webmail accounts, cloud infrastructure, GitHub and development environments, VPN and […]