40522129 story Microsoft Security Essentials Loses AV-Test Certificate 185 Posted by samzenpus on Thursday November 29, 2012 @07:40PM from the is-there-extra-credit? dept. helix2301 writes "Every two months, AV-Test takes a look at popular antivirus software and security suites and tests them in several ways. In their latest test which was performed on Windows 7 during September and October, Microsoft Security Essentials didn't pass the test to achieve certification. Although that may not sound that impressive, Microsoft's program was the only one which didn't receive AV-Test's certificate. For comparison, the other free antivirus software, including Avast, AVG and Panda Cloud did."