It already happened on Linux. I know I saw one in 2001, but I wouldn't be surprised to hear they go back years earlier. They don't look much like Windows/OS X

It already happened on Linux. I know I saw one in 2001, but I wouldn't be surprised to hear they go back years earlier. They don't look much like Windows/OS X botnets; instead of this trojan horse stuff they'd just crack insecure services or guess poor passwords and escalate privileges automatically. If you have any Ubuntu servers, tail /var/log/auth.log (similar names on other distros) you'll see trying to ssh in.