Firefox accounted for almost half of all browser vulnerabilities in the first 6 months of 2009, according to a study conducted by California based Cenzic a leading web site security company.

Of all the browser vulnerabilities tested, Firefox had 44 percent of the total, followed by Safari, which formed 35 percent of the browser vulnerabilities. Internet Explorer was third, with 15 percent, and Opera was at 6 percent.
This beats the popular perception that Firefox is the most secure browser.
Earlier too, Secunia had rated Firefox as the most vulnerable browser.
You can download the PDF report here.
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