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167.99.189.19 has a very high threat confidence level of 100%, originating from Toronto, Canada, on the DigitalOcean, LLC network (14061). It has been observed across 222 sessions targeting SSH, SMTP, with detected attack patterns including ssh host fingerprint and shell rc immutable removal, First observed on February 17, 2026, most recently active March 10, 2026.
Execution of a multi-command host fingerprinting script that collects kernel details, architecture, uptime, CPU count and model, GPU information, login history, and binary help characteristics, combined with chattr -i $HOME/.bashrc $HOME/.zshrc 2>/dev/null || true to remove the immutable attribute from user shell initialization files in the current user’s home directory.