A security researcher has hacked Windows RT to allow it to run desktop applications by bypassing the OS’s security systems. The jailbreaking isn’t dangerous to users’ systems, he insists. “It cannot at this point be exploited without the user actually wanting it, so it’s not dangerous,” researcher C.L. Roker said. The flaw that permitted Roker to sidestep security protections on Microsoft’s Surface tablet and run Windows desktop applications on it is a vulnerability, he added.