Hacker jailbreaks Windows RT, and finds it no different than Windows 8
Windows RT is kind of an annoying platform. It is Windows, designed to run on ARM chips, and although it still has the classic desktop, you can't use any legacy apps, because Microsoft has locked it down to only run apps from the Windows Store. That's all well and good if you want a tablet that is limited by the Windows Store, but it's not that great overall. And, as with all locked-down platforms, devs are hard at work on a jailbreak, and they just got a lot closer to a full jailbreak option for Windows RT.
The good news is that a hacker named Clrokr has found a way to bypass the security check on Windows RT, which means you would be able to run apps not signed by Microsoft. Clrokr has actually found that Windows RT is the same as Windows 8. He says:
They are the same thing and MSFT enforces Code Integrity to artificially separate these platforms... You can even enforce Code Integrity on Windows 8 to see what Windows RT feels like! The decision to ban traditional desktop applications was not a technical one, but a bad marketing decision.
What he found was that the only difference between Windows 8 and Windows RT is that minimum level security check, which will only allow apps signed by Microsoft to run. Clrokr has been able to bypass that check and get unsigned apps to run on Windows RT machines. The bad news is that as of now the jailbreak doesn't hold after a restart, and needs to be repeated.
Still, it's a big step towards a full jailbreak option for Windows RT. But more than that, we'd like to get some clarification from Microsoft on the real difference between Windows RT and Windows 8, because if Clrokr is accurate, it's kind of unacceptable for Microsoft to impose an artificial lockdown on Windows RT. We have contacted Microsoft about the issue, and if we get word back, we'll let you know.