Threats affecting El Salvador

Operation Master is a sophisticated cybercrime campaign exploiting a GlobalProtect authentication bypass vulnerability (CVE-2026-0257) to compromise enterprise networks across multiple countries. The attackers conducted extensive network scanning to identify high-value targets, executed SQL injection attacks with privilege escalation to steal databases, and exfiltrated Active Directory credentials. They monetized stolen data by selling it on underground forums and operating a multi-tenant automated invoice fraud platform that sent millions of phishing messages and fraudulent links. The operation employed advanced phishing techniques including M365 OAuth device-code phishing and voice-based credential harvesting, with payments collected via PIX through serverless proxies.

KEVReport on CVE-2026-0257MalwareCWE-565#globalprotect exploitationUnited States+14