ToughDiamond wrote:
One significant defense is to use something like Aomei Backupper to back up and restore the system partitions. Essentially you create an image while your computer is clean, and keep it on an external drive. Then you restore the image any time you think you may have picked up some dirt. As it completely overwrites the system, it's likely that any viruses will be wiped off. The bonus is that if you get into any kind of software-related trouble at all, it'll usually fix that too, without any need for you to find out what's wrong and how to put it right. The downside is that you have to figure out how to boot on an external drive (some computers these days don't like you to do that), because that's the way system restoration works - completely outside of Windows or whatever your OS might be. As you only run the program occasionally, as a one-off job, it doesn't slow you down when you're using the computer for your normal work. Windows still has its own system restore utility, but I don't think it's very thorough.
It's also good to use the NoScript browser plugin to block scripts that aren't necessary for the web pages to function. And Windows Defender is supposed to be quite helpful, so I wouldn't usually switch that off.
Some good tips here, ToughDiamond!