I received a notification today from WD (at the notifications area) stating that "malware detected and is being cleaned". Funny enough I checked WD history and nothing was found there. I clicked on the notification and nothing was shown there either.
I have been scanning several folders (browsers cache, appdata and so on, as well as a quick test) with WD but my system seems to be pretty clean. Could it be that Steam was opened when I got that notification?