Unlike Windows 8

If you’re looking to buy a Windows RT tablet, security vendors said, don’t expect to be able to protect it with third- party antivirus or other security software. In fact, it seems that Microsoft may block third-party antivirus vendors from developing security solutions for Windows RT. Microsoft won’t allow such software to be sold on its online store, which is the only way to load applications onto Windows RT devices, security vendors say. It’s not known whether Microsoft will develop its own security solution for Windows RT, although most security observers assume Microsoft will do so. Unlike Windows 8, with which it shares code and most of a name, Windows RT is both a different operating system and a new business model for Microsoft. While Windows 8 runs on traditional Intel processors, Windows RT is compiled for the low-power ARM chips that power the vast majority of the world’s smartphones and tablets. Applications written for Windows RT can run on Windows 8, but a Windows 8 app must be specially compiled to run on both Windows 8 and RT - something most apps apparently do, Microsoft says.