Malware is not something I get, it has been a long time since I got anything and then my antivirus software (Kaspersky) picked it up straight away and as it was in a zipped file there was not much of a chance infecting my install, simply deleted it.
Same here,
It's fine to be overprotective of course but for me it's a little OTT.
Resident AVAST and weekly scans with Mallwarebytes, Spybot, CCLeaner and of course a monthly full AVAST scan results in a completely clean and smooth running system all the time.