Microsoft states that apps published to the Microsoft Store, (UWP from Universal Windows Platform), are the safest solution as they protect against any malware that targets Win32 software.
One of the reasons why UWP apps are recommended is that they run on a sandbox, which means that malware is theoretically impossible to get to your data because sandbox blocks access to other files.
From a technical point of view, Microsoft allows Sandbox UWP applications to access the other files stored on the hard disk with the broadFileSystemAccess API.
This is needed by some UWP apps that need to save files to system disks, and load documents or other operations with data to the computer. However, the API displays a warning whenever applications require file access. So the users they can block apps they think might contain malware.
But let's see what the problem is. This warning can be blocked and does not appear, such as he revealed Windows developer Sebastien Lachance. In an analysis of error, the developer explains that the warning could be bypassed by hackers, which allows them to gain access to data on your computer without your knowledge.
Microsoft has recognized the error and apparently fixed it in Windows 10 October 2018 Update (version 1809) which does not work.
So, although there is a solution ready, no one can use it for the time being, until the company officially releases (again) Windows 10 October 2018 Update.
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