EICAR test file

The EICAR Anti-Virus Test File, also called the EICAR test file, is a computer file developed by the European Institute for Computer Antivirus Research and the Computer Antivirus Research Organization. It lets people test antivirus software without using malware that could cause damage. Compliant virus scanners treat its EICAR string as a verified virus signature and should prevent the file from executing. The string can also be placed in compressed or archived files to test detection there.

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Purpose

Tests the response of computer antivirus programs

Safe alternative

Allows antivirus testing without real malware

Detection behavior

Compliant scanners respond similarly to a harmful virus