Ask Slashdot: How Do You Best Protect Client Files From Wireless Hacking?

dryriver writes: A client has given you confidential digital files containing a design for a not-yet-public consumer product. You need to work on those files on a Windows 10 PC that has a wireless chipset built into it. What can you do, assuming that you have to work under Windows 10, that would make 3rd party wireless access to this PC difficult or impossible? I can imagine that under a more transparent, open-source, power-user OS like Linux, it would be a piece of cake to kill all wireless access completely and reliably even if the system contains wireless hardware. But what about a I-like-to-phone-home-sometimes, non open-source OS like Windows 10 that is nowhere near as open and transparent? Is there a good strategy for making outside wireless access to a Windows 10 machine difficult or impossible?