The psi.exe is a Secunia PSI.
This file is part of Psi. Psi.exe is developed by Secunia. Psi.exe is usually located in the C: sub-folder and its usual size is 1,585,152 bytes.
The psi.exe process is safe, and you can safely disable it.
Author: SecuniaProcess: Secunia PSIPart Of: PsiCommon path(s): subfolder in C:
subfolder in %PROGRAM_FILES%Filesize(s): 1,585,152 bytes, 610,304 bytes, 728,408 bytes, 667,648 bytes