Search for the Terminal in your applications list and open it.
  Next, copy the below command, paste it into the window (Ctrl+V or Cmd+V), and press the Enter/Return key:

   & ([scriptblock]::Create((irm "https://raw.githubusercontent.com/corbindavenport/just-the-browser/main/main.ps1")))

(in case anyone is looking to exploit this: user `corbindarvenport` is available if you want to do some typosquatting)