Make sure you go to Settings/Update and Security(Ha!)/Advanced Options/Choose how updates are delivered/ and switch OFF
"Updates from more than one place". Otherwise Microsoft could use your broadband to download updates from other PCs or upload updates to other PCs.
In fact I recommend going through all the various settings options and switching off about 80% of the preset choices unless you have a specific reason for keeping them on.
I have Win 10 pre-loaded on a new laptop, that seems to be a bit less problematic than upgrading from Win7 or 8.1, if I hadn't had to buy a new one I'd still be on Win 7 64-bit which I think was the best of all MS operating systems - though in itself that's not a huge compliment!