This is the most prevalent distribution method for adware and PUPs. When a user downloads free software (especially from "freeware" or "shareware" sites), the installer often includes optional extras.
Consider a DNS filter (like Quad9 or Cloudflare Gateway) that blocks known malware domains — many variants of ben.exe phone home to domains blocked by these services. ben.exe virus
Do not operate as an Administrator daily. The ben.exe virus will have far fewer privileges. This is the most prevalent distribution method for