It turns out our favorite browser might also be the most susceptible to security breaches. According to application security vendor Cenzic, Firefox leads the way in terms of total vulnerabilities, accounting for 44 percent of all browser vulnerabilities reported in the first half of 2009.
Coming in second is Apple's Safari browser, which accounted for 35 percent. And what about everyone's favorite whipping browser, Internet Explorer? A comparatively low 15 percent. The Opera faithful will be stoked to learn that their favorite browser was the least vulnerable of the bunch with just a 6 percent share.
As to why Firefox's numbers were so high, Cenzic said it was a combination of things.
"They've gotten more traction as a browser, which is good for them and the more you get used the more exposure you have. As well a fair amount of the vulnerabilities have come by way of plug-ins," noted Lars Ewe, CTO of Cenzic.
In other words, Firefox's biggest strength -- customization through plug-ins -- might also be its biggest weakness. However, it's important to note that just because the tweakable browser had the most vulnerabilities, it doesn't mean that Firefox users were more at risk. According to Ewe, Ceznic looked at all reported vulnerabilities and made no distinction between a zero day bug and less serious security holes.