What is acSecurityLayer.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 acSecurityLayer.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.

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AcSecurityLayer.exe file information

The process known as acSecurityLayer or A-Trust Bürgerkartenumgebung belongs to software a.sign Bürgerkartensoftware by A-Trust GmbH or A-Trust Gesellschaft für Sicherheitssysteme im elektronischen Datenverkehr GmbH.

Description: AcSecurityLayer.exe is not essential for the Windows OS and causes relatively few problems. AcSecurityLayer.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 3,548,320 bytes (20% of all occurrences), 3,331,232 bytes, 3,605,664 bytes, 4,373,864 bytes or 3,626,880 bytes. 
The program has no visible window. It is digitally signed. The application starts upon Windows startup (see Registry key: Run). The acSecurityLayer.exe file is not a Windows core file. AcSecurityLayer.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 46% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with acSecurityLayer.exe, you can do the following:
  1) uninstall a.sign Bürgerkartensoftware from your computer using the Control Panel applet Uninstall a Program
  2) go to the software publisher,, for advice.

Recommended: Identify acSecurityLayer.exe related errors

Important: Some malware camouflages itself as acSecurityLayer.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the acSecurityLayer.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

Summary: Average user rating of acSecurityLayer.exe: based on 1 vote with 1 user comment. One user thinks it's probably harmless.

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Best practices for resolving acSecurityLayer issues

A clean and tidy computer is the key requirement for avoiding problems with acSecurityLayer. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the acSecurityLayer.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

acSecurityLayer.exe [all]