FireFox has made the right move and now blocks Flash, the antiquated and software equivalent of swiss cheese by default:

The Mozilla Firefox web browser now blocks Flash by default. And when I say “blocks,” I don’t mean it asks you nicely if you’d really like to use Flash. I don’t mean it automatically pauses Flash videos like Google Chrome. I mean Mozilla has decided that Flash is going down.

Why such a hard-on for Flash? Why now? Well, it could be that the world just rediscovered just how prone Flash is to nasty, nasty vulnerabilities. When the Hacking Team—an Italian security company that sold intrusive spy tools—got hacked, one of those tools got out into the wild. A nasty hole in Flash that Adobe has yet to patch.

And in fact, Mozilla’s Mark Schmidt says that once the “publicly known vulnerabilities” are fixed, Firefox will stop actively blocking Flash.

So what about the bigger picture? Why ask to get rid of Flash once and for all?

This is only good for older versions of Flash with known vulnerabilities. The most recently issued version of Flash appears not to be blocked .. yet.