lol, I guess there’s no such thing as secure browser (and there probably never will be one…). Anyway, for those of you who are concerned about the IDN buffer overflow problem (as illustrated here – WILL crash you FF browser without the fix!), you can now temporary fix this problem by disabling IDN:
1 – Open up FF.
2 – type about:config into the address bar and press enter.
3 – find the entry network.enableIDN and set that to false.
Now try going to this website again, FF shouldn’t crash .
Here’s the official security bulletin.