OTX Threat: 2026 Q3 Linux SSH Server Targeted Malware Statistics Report

During Q3 2026, honeypot monitoring revealed attacks targeting poorly managed Linux SSH servers through brute force and dictionary attacks. Primary malware families included ShellBot (also known as PerlBot), a Perl-based DDoS bot with C&C infrastructure at specific IPs, and Fisieredoor, a backdoor capable of executing commands and deploying SSH dictionary attack tools. Attackers downloaded malware