What is trufos?

The genuine trufos.sys file is a software component of BitDefender Antivirus by Bitdefender.
BitDefender Antivirus is a security program that protects computers against malware, viruses, spyware, trojans and computer worms. Trufos.sys is a kernel driver associated with Bitdefender Antivirus. This is not an essential Windows process and can be disabled if known to create problems. Bitdefender Antivirus is a security program that features an antivirus scanner, a PUA (potentially unwanted applications) shield, a personal firewall, cloud protection technology, machine learning algorithms, parental protection, and more. Bitdefender Antivirus supports the Windows, Macintosh, Android and iOS platforms. Bitdefender is a Romanian company that develops solutions in computer security and online protection. The company was founded by Florin Talpeș in 2001 as a spin off from SOFTWIN. Bitdefender products currently provide anti-virus and anti-spyware protection against internet security threats such as Trojans, viruses, rogues, rootkits, spam, adware and more. Bitdefender products include web protection, firewall, cloud antispam, parental controls, a vulnerability scanner, device antitheft, file encryption, and backup for corporate as well as home users. The company reports over 500 million devices worldwide carrying its technology. Bitdefender is headquartered in Bucharest, Romania.

Trufos stands for Trufos Kernel Module

Trufos.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the operating system, hardware etc. The free file information forum can help you determine if trufos.sys is a Windows system file or if it belongs to an application that you can trust.

Run a free scan to check for trufos drivers in need of updating

Trufos.sys file information

The process known as Trufos Kernel Module or Trufos belongs to software BitDefender Antivirus or Bitdefender Antivirus by BitDefender S.R.L (

Description: Trufos.sys is not essential for the Windows OS and causes relatively few problems. Trufos.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 355,744 bytes (33% of all occurrences), 340,624 bytes and 5 more variants. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. The trufos.sys file is a Verisign signed file. It is certified by a trustworthy company. The trufos.sys file is not a Windows system file. trufos.sys appears to be a compressed file. Therefore the technical security rating is 8% dangerous; however you should also read the user reviews.

Uninstalling this variant: You can also do the following:

Recommended: Identify trufos.sys related errors

Important: Some malware disguises itself as trufos.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the trufos.sys 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

Der Prozess gehört zur Software Trufos oder BitDefender Antivirus Plus v der Firma SOFTWIN.
Gehört zur Anwendung Bitdefender
  Weber Peter   (further information)
It is used by Virginmedia as part of its anti-virus system
  Mike Platts   (further information)
Original filename: TRUFOS.SYS Location: C:\Windows\System32\Drivers Size: 389,240 bytes Description: Trufos Kernal Module File version: 2.3.681.7863 Product Name: BitDefender Antivirus Product Version: Name of signer: Bitdefender SRL Digest algorithm: sha1 Timestamp: 9/16/2013 7:19:14 AM
  Bill Renaud  
It is used by "Cisco AMP for Endpoints Connector".

Summary: Average user rating of trufos.sys: based on 4 votes with 5 user comments. 4 users think trufos.sys is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving trufos issues

A clean and tidy computer is the key requirement for avoiding problems with trufos. 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 trufos.sys 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

trufos.sys [all]