Microsoft warned on Friday that Apple’s Safari Web browser for Windows exposes PCs to a security hole that permits potentially malicious files to be downloaded to a user’s machine and run without prompting the user. Microsoft’s advisory comes two weeks after security researcher Nitesh Dhanjani warned both Redmond and Cupertino that Safari introduces a vulnerability in Windows and OS X machines, which allows any rogue Web site to “carpet bomb” the user’s Desktop (Windows), or Downloads directory (Apple), with unwanted files (Safari is not installed by default on Windows machines). Screenshot: Nitesh Dhanjani Dhanjani said Apple indicated it wasn’t in a hurry to fix the Windows vulnerability, if it ever got around to it. “Apple does not feel this is a issue they want to tackle at this time,” Dhanjani wrote on his blog. “In my most recent email to Apple, I suggested that they incorporate an option in Safari