What a successful exploit of a Linux server looks like

Like most mainstream operating systems these days, fully patched installations of Linux provide a level of security that requires a fair amount of malicious hacking to overcome. Those assurances can be completely undone by a single unpatched application, as Andre’ DiMino has demonstrated when he documented an Ubuntu machine in his lab being converted into a Bitcoin-mining, denial-of-service-spewing, vulnerability-exploiting hostage under the control of attackers.