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Recently, one of my old PC at home lags at times. I open the Process Monitor (from sysinternals.com) and find multiple system calls from a process with PID 0, including CreateFile operation. I thought PID 0 belongs to system idle process but now I am confused. I am worried that my computer has caught some virus or being monitored by some hackers. So what on earth is this process of PID 0? Is it possible for hackers to hide their operations in this process?

By the way, the OS is a 3-year-old Vista SP2 (32-bit).

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migrated from stackoverflow.com Jun 7 '13 at 19:17

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ProcMon is probably reporting 0 for IO requests it can't tie to a specific process. –  Billy ONeal Jun 7 '13 at 19:25
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Make sure you're running Process Monitor with admin privileges. –  ultrasawblade Jun 7 '13 at 19:28
    
I was running with admin –  LeOpArD Jun 8 '13 at 7:21

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