The antivirus software is regularly tested with fingerprint solutions
The EICAR test file simulates an infected file in an inoffensive way. 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 a market standard to test the responsiveness of antivirus software without risking a real infection. Running the test ensures the reaction of the user and the potential cleaning procedure.