AMTSO test file


Clean - Not Malware


W32, Android

AMTSOTestFile, Amtsopuatestfile


The Anti-Malware Testing Standards Organization (AMTSO) test files are special files used to check and confirm the correct operation of security products.


Automatic action

Based on the settings of your F-Secure security product, it may allow the file to run, block it from running, move it to the quarantine where it cannot spread or cause harm, or ask you to select an action.

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Technical Details

AMTSO is the Anti-Malware Testing Standards Organization (

As part of its services, the AMTSO website offers visitors a set of 'dummy' files which can be used to test if an installed security product is working correctly.

When the user downloads the dummy file, ideally the security product should detect it exactly as if it were a Potentially Unwanted Program (PUA). This allows the user to:

  • Confirm the security application is installed and working correctly
  • Observe the product's actions when a suspect program is found
  • Check internal procedures and reactions when a suspect program is found

Downloading an AMTSO test file

Users who would like to check the correct operation of their F-Secure security products can download the test file from the AMTSO's website at: AMTSO: Feature Settings Check - Potentially Unwanted Applications.


Users may also test the correct functioning of their antivirus product using the EICAR test file.

For more information, see: F-Secure Community: Testing your virus protection with EICAR test file.

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