why can't i find the usual antivirus and security apps for win10 mobile?

I have searched the store for antivirus and mobile security and get very few results, most of them unrelated to what I'm looking for, why is this? I don't find any built in antivirus or security and this is a big issue for me, do you have something in the works"

from Windows Central Forums //forums.windowscentral.com/showthread.php?t=452757&goto=newpost
via IFTTT