A ZDNet article titled “Is the Firefox honeymoon over?” claims that Firefox, the popular alternative to Microsoft’s Internet Explorer, actually has more exploits and security flaws than Microsoft’s work. This can be difficult to measure, as not all exploits are created equally. In any event, the article is definitely worth a look.
As always, it’s best to keep your computer updated as well as install Anti-Virus and Anti-Spyware software no matter which browser you choose.