http://securitywatch.pcmag.com/security-software/326903-mac-antivirus-test-reveals-winners-losers
"Symantec just wishes the researchers had chosen a different product version. "While we would have preferred testing our 6.1 beta product that includes significant protection enhancements, AV-TEST evaluated an older version of Norton Internet Security for Mac," explained my contact. "We have requested an opportunity to test the 6.1 version to demonstrate the efficacy of our product." Indeed, according to the detailed test results, AV-Test used version 5.6, which averaged 54.7 percent detection."