This is the biggest problem that I have with the Windows 'Just download the program from the internet' mentality. All that it takes is one brief moment when you let your guard down and everything falls apart. On top of that, modern search engines seem to be very happy to show bogus results as prominently as possible. Package managers aren't perfect, but they're a big step in the right direction. When I have to use Windows outside of a corporate or managed setting, I use something like Chocolatey.