The antivirus software is regularly tested with fingerprint solutions
The EICAR test file simulates an infected file harmlessly. This file allows for a test of the antivirus software to see whether it reacts properly and also whether it alerts the user.
The EICAR test file is an industry standard to test the responsiveness of antivirus software without risking a real infection. Running the test ascertains the reaction of the user and the potential cleaning procedure.