While there’s plenty of casual evedence you should be using firefox, like it’s nifty tabbed support and the awesome extensions with their one-click integrated install, there’s now verifiable lower vulnerability info from Symantec as well.
Apparently they had only been tallying vendor reported exploits and vulnerabilities with IE and it’s Mozilla based rival. No longer is this the case.
Now they’ve got statistics out on both vendor reported and confirmed sources reports of vulnerabilities. Which levels the playing field dramatically.
You see, with open source software the group maintaining it (be they a vendor or concerned individuals) tend to release any incoming bug as… well… a bug. They don’t have any reason to hush up flaws in their software, as they’re fixed in as timely a fashion as is possible. Sometimes instantly, depending on the nature of the problem.
This is in stark contrast with the proprietary software world where things tend to be hushed up until it’s a convenient time to fix a problem. Sometimes this ignoring of the problem goes on indefinately if their’s no easy fix. Not all proprietary software, mind. Certainly Microsoft though.
So there was quite an imbalance in the number of software flaws in FireFox vs. Internet Explorer. Now that the tallying method has been fixed, we should see some more relevent numbers. Good show!
Linux Pipeline | Firefox Whips Internet Explorer In Vulnerability Tally

