I was a PC user for 30+ years and never had any problems with viruses/malware when installing Windows. First time I install Windows using bootcamp bam right off the bat infected. An it's not like I got Windows 10 ISO from a third party, for I got it directly from the horses mouth (Microsoft). I think it was Malware, but I ended up having to install an anti-virus app on the PC side of my iMac. I finally got Windows 10 to operate smoothly (pun intended), but I think to myself if this had been a diehard Apple person installing Windows 10 (or what ever version) for the first time that person would had been having fits.