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 (www.bitdefender.com) or Bitdefender (www.bitdefender.com/).
Description: Trufos.sys is not essential for the Windows OS and causes relatively few problems. The file trufos.sys is located in the C:\Windows\System32\drivers folder.
Known file sizes on Windows 10/11/7 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 trufos.sys file is not a Windows core file. The program is not visible. The file has a digital signature. The file is a Verisign signed 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:
The software vendor offers the option to consult
www.Lavasoft.com's Customer Service for advice or uninstall
AntimalwareEngine software via Windows Control Panel/
Add or Remove Programs (Windows XP) or
Programs and Features (Windows 10/8/7).
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.
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 executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To get your computer running as fast as it did on day one, you can 8reset your PC. Your personal files will remain intact, but any programs you installed will need to be reinstalled.
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. A good Bantivirus software detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.
Other processes
nginx.exe atibtmon.exe cnmnsst.exe trufos.sys wajamupdater.exe desktop_media_service.exe clmsserver.exe grammarly.desktop.exe wzpreloader.exe uimam.uwpmail.app.exe psi_tray.exe [all]
Score
User Comments
Weber Peter (further information)
Mike Platts (further information)
Bill Renaud
Leonid
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.