Скрытый процесс - как определить?

[James Brown <jbrownfirst@gmail.com>]

Утилита unhide находит один скрытый процесс в системе:
> $ sudo unhide sys

> Unhide 20100201
> http://www.security-projects.com/?Unhide
> 
> 
> [*]Searching for Hidden processes through kill(..,0) scanning
> 
> [*]Searching for Hidden processes through  comparison of results of system calls
> 
> [*]Searching for Hidden processes through getpriority() scanning
> 
> [*]Searching for Hidden processes through getpgid() scanning
> 
> [*]Searching for Hidden processes through getsid() scanning
> 
> [*]Searching for Hidden processes through sched_getaffinity() scanning
> 
> [*]Searching for Hidden processes through sched_getparam() scanning
> 
> [*]Searching for Hidden processes through sched_getscheduler() scanning
> 
> [*]Searching for Hidden processes through sched_rr_get_interval() scanning
> 
> [*]Searching for Hidden processes through sysinfo() scanning
> 
> HIDDEN Processes Found: 1


Но не указывает, что это за скрытый процесс.
Как определить, что это за процесс?