North Korean hackers broke into South Korean collaborative-work software vendors and then used that access to target the vendors’ customers. ENKI WhiteHat said the 2025 to early-2026 campaign hit at least two unnamed groupware suppliers: one was compromised via a remote-code-execution flaw in an internet-exposed mail server, and another via social engineering of an employee. The attackers deployed Gomir and new malware variants, moved laterally, stole customer server information, tampered with login pages to harvest credentials, and then compromised at least one SaaS customer server.
Why it matters: This is a supply-chain style espionage campaign: organizations can be exposed through trusted software providers even if they were not the initial target. South Korean firms using affected collaboration or SaaS platforms should urgently review vendor access, check for credential theft, enforce multi-factor authentication, and hunt for Gomir and related persistence on servers and employee accounts.
2026.07.22
100% relevant
This article establishes a distinct campaign in which Kimsuky first compromised South Korean software vendors and then pivoted into customer environments, with no direct match among the tracked stories.
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