Touch-based (and by extension, NUI-based) OS'es and mobile applications are the future. Windows always sucked. Mac OS always sucked. Every desktop OS ever built sucked because it is a horrible way to use a computer. Nobody ever really wanted to use these terrible desktop metaphor systems... they only ever did because they had to.
Security has a vital place in every OS, regardless of the skin you put over the top of it.
I guess the desktop environment was just a random choice of "this works, so just leave it in" from whatever distribution they started with.
Granted, browsers aren't without their security holes, but then again, neither are operating systems. Given the amount of effort being put into browsers to make them secure (especially Chrome), my money's on that.
Touch screens are to desktops as push bikes are to tractors. You need both. Some people even use both. Or just one. Or neither.
Maybe you feel this way because you've been driving a tractor around all this time and you feel like you've been wasting your time, however some of us (I imagine a lot of us on HN) like to do farming occasionally :-)
"If I had asked people what they wanted, they would have said faster horses."
People do not desire better desktop operating systems. They want computers to disappear. It simply does not matter how good this awesome new, secure, desktop OS is because it's built for a world that doesn't exist anymore.http://blogs.hbr.org/cs/2011/08/henry_ford_never_said_the_fa...
However, we still use horses as transport. Sure, it's often just for pleasure, but the Police still use them, and rural people still use them, or people in mountains etc, because in those situations they are still better than anything Ford came up with.
So I don't think that quote is relevant here. People have accepted 'post-pcs' into their lives and they are good at lots of things. There are things that larger 'real' computers are better at though, and I don't see any evidence that will change.
This system goes at least 2 layers deeper. System itself makes sure that each window has its own desktop environment and can't see others. Hardware takes care about the separation between security containers the apps are running in. Protection of the app itself is just the first line of defence and is not going away, so whatever sandboxing exists in the browser still applies.
They are also talking about protecting hardware sharing from being used to cross boundaries which is another layer of paranoia (not unwarranted)
You say that nobody wants to use desktops and people want computers to disappear. Unlike you, I don't believe that already, so do you have some evidence for it?
If you build a webmail client, you need to know all about these attack vectors, and you need to go out of your way to prevent your application from being susceptible to them. Websites are insecure by default.
I don't trust a web browser with my email at all. Not yet. If I were to use webmail, I'd make sure to set up a separate instance of Firefox to run it in, with it's own profile. I will continue to use Thunderbird for now though.
I'm not against the idea of using webmail, I just don't think the web is secure enough yet.
Took my old brain a second or two to realize that I had previously heard that quote associated with Henry Ford.