MacWizz

Over the past few days, I'd noticed these intrusive adds popping on web pages when using the Chrome browser. All were clearly identifiable via the word "MacWizz" appearing on the title bar of each advertisement's windows. I was prompted to investigate further and finally chanced upon the following:

Following the link, I found a good description of what MacWizz was:

MacWizz is advertised as an application that displays coupons for sites you are visiting and competitive prices when you are viewing product pages at sites like Amazon. Though this may sound like a useful service, the MacWizz app can be intrusive and will display advertisements whether you want them to or not.

When installed, the MacWizz browser extension will display advertising banners, pop-up advertisements and in-text ads, stating that they are brought to you by “MacWizz”. The MacWizz Ads will have different text under the pop-up: “Powered by MacWizz”, “Brought to you by MacWizz”, “You’ve received a premium offer from MacWizz” or “Ads by MacWizz”.

There were also a series of steps outlining how to remove it. Following these however, did not remove the infestation and so I was led to the final step:

The link provided led to https://www.malwarebytes.com/mac/ and after downloading and installing the program, I ran a scan. It didn't take long to complete and some offending items were identified and removed. Since then I've had no problems and it seems to have worked. There is a paid app on the App Store that costs about A$22 that purports to do the same thing but Malwarebytes is free (unless you want to buy the business version). Here is the interface that will confront you after installation.