The X-Box games in the store all have drm. Hell I have iPhone and iPad apps that use it, it's how they make sure you can't use pirated versions of their apps. It's use has become more frequent these last few years.
If the Fitbit app uses a DRM protection, then you agreed to install it when you downloaded it. It's for your protection as much as theirs, especially if that app stores personal information.
I agree that I would not want unknown apps downloading into my system, but a drm is not an app, it's a set of rights. It's part of the app. And, you won't see the DRM downloads on an iDevice, unless you jailbreak and install a tweak that uses it, you will see it download into your device and then it will respring. But If you buy an app like ProTube, it's installed with the app. The drm for Fitbit should have installed with Fitbit, but for some reason you saw it (being installed).
You won't find it on your computer because it's encrypted content and probably stored in C:\Users\(username)\AppData\Local\Packages. But mainly it says that you downloaded it on your PC and you are using it, it's uniquely paired with your store account so that nobody else can use it.
Look I'm on your side, I would not want malware either. But this is not Malware, malware does not load through the Store. as drm is for your safety. So you can drop the hostility. Later, I'm outta here.
Hell if you think you have a virus, you can download a trial of NOD32 and check, if it was a virus, NOD will find it.
I get what you are saying, I do, but if you went somewhere and asked 100 people what a drm is they are going to look at you with a confused look. MS shouldn't be showing a drm downloading in the app store. Do it behind the scenes. It just looks sketchy. Point is neither you nor I know what it was because MS didn't say what it was. It just showed it being downloaded.
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