Browser security is a funny thing. The number of bugs and exploits is widely reported on blogs and tech sites, but it is really difficult to know just what this means, whether some browsers are more secure than others, or if it's time to start sacrificing goats.
The first issue is: how do we determine the security level of something? Well, you could measure the number of bugs and exploits over a month or year. That'll get you some numbers, which you can then compare. The winner is the one with the lowest count. Or you could