If you want a real-time malware/virus scanner, then you will need a full anti-virus program. It only scans when you run the program and manually initiate a scan. MBAM for Mac does not run in the background.

Is it because the computer isn’t upgraded to Sierra? IPhoto Apple version 9.6.1 released Mar 19, 2015 Incompatible item and it appears it isn’t downloaded - This to me is what the computer needs: does this make sense? Somewhere in my evaluation of the computer I saw that there is a Free upgrade to Mac OS Sierra RAM 4GB 1333MHz DDR3 Startup disk Macintosh HD Processor 2.3 GHz or 3.3 GHz I don’t recall. Plus I couldn't tell if it's up-to-date, look up any history on it or tell if it automatically runs in the background. That's the fastest I've ever seen Malwarebytes run on any PC including new ones. I don’t think the computer is infected: she has Malwarebytes for Mac and it took only 10 seconds to run a quick scan and didn’t report any issues. The owner was surprised but I told her when a pop up does occur or there is an email issue, take a picture so I can tell what’s going on. I didn’t see any pop ups while I was there or any email issues.

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