Check out this  note from Dave Palmer, recent speaker at SNUG.    

I’ve used Malware Bytes Anti-Malware (MBAM for short) for a number of years, first the free version, then the PRO (paid) version. As this website says, this product can be run in protection mode, that is, in the background along with your normal anti-virus that’s also running in the background. There are 2 reasons this is a good deal. First it’s 24% off the regular price. Second, as the website says says, MBAM is about to switch away from a lifetime license to an annual payment. So if you don’t already have MBAM, this is the last chance to get it with a lifetime license. For the record, I don’t make any money on this.

Here’s the offer: