Everyone has an opinion on this.

I use the built-in Microsoft Defender, which you probably have running, Don.

Then I use Malwarebytes, which is a tool that not only can check for problems on demand but also runs in the background to prevent them.

Then I also have SuperAntiSpyware running, to catch those problems that the other two miss, and remove ad-based tracking cookies every night.

Once in a great while, I run Adware Cleaner, as mentioned by Mario.

It's hard to know what is needed, since each of these add-on products have marketing that tries to convince you the sky will fall without it. Some of them are so intrusive they block desirable files, and/or slow your computer to a crawl. So, I based on all I read and have experienced, I think it's good to have only a couple running at most. But, who really knows?

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.