While Bitdefender received a score of 17 points, BullGuard's security product was ranked second with 16.5 points, followed by Kaspersky with 16. Windows Defender, Microsoft's own app, got only 11.5 points, but enough to receive the AV-TEST certification.
Bitdefender Internet Security 2013 Is the Best Windows 8 Anti-Virus ? AV-TEST - Softpedia