[Giaguara]

"Over time the Mac allows unknown user(s) to log into the computer, change permissions and eventually obtain root authority. Data is sent from the machine to the internet. Using a combination of ssh or telnet logins with AppleScript automation my machine is consistently compromised. Mouse movements are tracked, passwords are detected by a script that dupes me into thinking the system needs my password (though I recognize that one now). To what end I have no idea. "

Could you post some system log / console log entries where you see this?

If you have ALL options for sharing disabled, NO remote login allowed, and have firewall on (with only services you use), and use Little Snitch, what you describe should not happen. In addition to those, keep passwords secure, don't use back to my mac or screensharing, disable ARD and VNC for ALL users on that Mac, physically lock down USB (from having any keyloggers etc). If there is ANY user that would have VNC/ARD enabled, any user could be seen.. but as said, I'd love to have a look at the logs.