What is security.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the security.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for security.exe related errors

Security.exe file information

The process known as protect file and folder or nLite belongs to software FP or nLite or Project1 by OICsoft ( or eMule (

Description: Security.exe is not essential for Windows and will often cause problems. Security.exe is located in a subfolder of the user's profile folder. Known file sizes on Windows 10/8/7/XP are 1,334,464 bytes (33% of all occurrences), 3,017,728 bytes or 3,096,064 bytes. 
There is no file information. The security.exe file is not a Windows core file. The application starts upon Windows startup (see Registry key: Run, MACHINE\Run, User Shell Folders). Security.exe is able to record keyboard and mouse inputs, connect to the Internet, monitor applications and manipulate other programs. Therefore the technical security rating is 64% dangerous, however you should also read the user reviews.

Recommended: Identify security.exe related errors

If security.exe is located in the C:\Windows\System32 folder, the security rating is 58% dangerous. The file size is 65,536 bytes. There is no information about the author of the file. The program is not visible. It is not a Windows system file. It is an unknown file in the Windows folder. Security.exe is able to record keyboard and mouse inputs and monitor applications.

Important: Some malware also uses the file name security.exe, for example not-a-virus:AdWare.Win32.Delf.hft (detected by Kaspersky), and Trojan.Gen.2 (detected by Symantec). Therefore, you should check the security.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

appeared out of nowhere..with the virus

Summary: Average user rating of security.exe: based on 2 votes with 1 user comment. One user thinks security.exe is essential for Windows or an installed application. One user thinks security.exe is dangerous and recommends removing it.

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Best practices for resolving security issues

A clean and tidy computer is the key requirement for avoiding problems with security. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the security.exe process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

security.exe [all]