PEFService.exe is part of a product called known as Intel Security PEF and the developer is Intel Security, Inc. .
If you think that this file contains a virus or another malware, please download a virus scanner.
If PEFService.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Intel Security PEF from the list to remove the process PEFService.exe from your computer.
If you have any problems with PEFService.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Intel Security, Inc., the developer of PEFService.exe and ask for more information.