This MCShield (
Authors' website)?
I never heard of it, but seems like a great idea if you use flash drives and such much (which I don't). Especially seeing, as I learned recently, the latest news on Cryptolocker suggests infected USB sticks as a means of distribution. Something called WORM_CRILOCK.A (by Trend Micro), if anyone is interested..
I'm pretty sure it was someone on avast! Forum (years ago) suggested/recommended SUPERAntiSpyware as well MBAM. Quite compatible, and, occasionally, SAS scan does detect stuff others miss. Pretty good deal too, because license fee is a once only payment.