My Bad

Well, I broke my long-standing rule, which is, "if it ain't broke, don't fix it".  I downloaded a program called MacKeeper, supposedly to clean my MacAir and speed it up.  And of course, it was a Trojan Horse spyware,.  The only thing I did right is that I didn't "buy" the program, so I didn't give away my credit card info, dumb me.  It took C about 30 minutes to get the program erased and install Malwarebytes, which is what I was running before it expired.  All seems OK now, it hasn't put in an appearance since he did all that.  I am so dumb.  I bought two years of coverage.  One time I received a phone call from a scammer, and after I was told how my computer was hacked, they could fix it, etc., I asked if they had ever heard of Malwarebytes, and "click" they were gone.   I was reading a bunch of posts on Facebook, telling how they get rid of calls from scammers, and One lady said, she answered the phone with "Sheriff's Office, Fraud Division" and they hung up and deleted her number from the call-back list.  Worth a try...