You'd be a fool to trust your data/computer to Windows Defender and something like ClamAV.
Fixed, and we can all go home now.
Its a myth that Unix and half arsed derivatives like Mac OSX are virus free... ...even if our oppswit developers thought their stupid Macs were immune, and they run (even more oppswitted) as UID 0. Needless to say, after some red faces and being shouted at, they use AV and their local accounts are normal users (though I still notice the oppswits immediately su as soon as they open a terminal window).
Windows is secure. Every bit as secure as things like Linux and Mac OS, probably more so because it has to be. The problem is the users. The first thing a really thick Windows user does is use an Admin account day to day, the next retarded thing is read dangerous wank on t'interweb and disable UAC, because security is so tedious, and they think it makes their penis match the size of their ego...
. These types of users then install the lame Ubuntu (aka, Linux for *REALLY* stupid people) and run as root, giving their machines over to anyone who wants them.
MS are ahead in security practices, because they have been doing it longer, due to being targeted for longer. The others all playing catch-up. That includes kernel devs, and browser makers. Although, I do think MS have lost their way in the consumer area, following the excellent Vista and almost as good Win7 their OS's have been flawed. Win8 is a great OS with a near unusable UI, Win10 is still buggy and suffers bipolar.
Opps, sorry, I forgot, I should know its trendy to hate MS