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221.132.21.99 has a threat confidence score of 91%. This IP address from Vietnam (AS45899, VNPT Corp) has been observed in 15 honeypot sessions targeting SSH, TELNET, HTTPS, DOCKER, HTTP protocols. Detected attack patterns include http mass web rce exploitation scanning. First observed on April 18, 2026, most recently active April 19, 2026.
Coordinated automated exploitation attempts targeting public-facing web services, including PHPUnit eval-stdin access, PHP-CGI argument injection, Docker API exposure, directory traversal, ThinkPHP invokeFunction abuse, and command execution patterns (wget/curl pipe to shell). Identifies opportunistic bot-driven RCE scanning and framework-specific exploit chaining against internet-exposed applications.