And this isn't a "it could happen some day" threat, it's already a thing. There are simple one-click setup programs that can monitor a wifi network, and inject

And this isn't a "it could happen some day" threat, it's already a thing. There are simple one-click setup programs that can monitor a wifi network, and inject malware into any downloads of executable or zip files that it can find. With things like Stagefright still affecting a scary large amount of android users, what happens when someone starts injecting malware into images which can compromise an entire phone without so much as a hiccup.