If you are facing that problem on Windows operating system then your only possible and safe choice is to go with an open-source operating system that's managed by developers from all around the world and it's source is freely shared with the ones who use it.

I would say the easiest out of those open source operating systems is going to be a Linux based distro that would have a good user interface and themes which will help windows users to easily get used to it. Linux distro like Linix Mint is going to be my choice if someone wants to have a safe operating system that looks similar to Windows.

Another free and open-source operating system that I used in past which's very similar to Windows XP is ReactOS. I don't know if that one will work or not as I have used it when it was in its early versions but I can say that the programs worked fine on that operating system. You can give that one a try as well.

Windows operating system is used by most people and is managed by Microsoft team of developers only whom Microsoft can trust but the Linux and other open-source operating systems are managed by the community of developers who want to help others by providing them free software. You can safely trust the open-source operating systems and surely you won't face such clipboard virus or any other issues with those operating systems.