Firefox accounted for 44% of all browser bugs reported in first half of year, said Ewe, while Safari vulnerabilities came to 35% of total. IE, meanwhile, accounted for 15%, while 6% of all flaws were in Opera. According to California-based Cenzic, Mozilla's browser had largest percentage of Web vulnerabilities over six-month span, while Apple's Safari had dubious distinction of coming in second. Microsoft's Internet Explorer was third, while Opera Software's flagship browser took fourth place. Cenzic didn't separately count number of "zero-day" bugs -- those unpatched at time exploit code went into circulation -- said Ewe, who defended his company's tally at same time he downplayed their significance.

Application Security Trends Report by cenzic -