Why'd you choose to build a Hackintosh rather than just going Linux and/or Windows?
* Lots of professional userland software that you don't get on Linux.
* Has a POSIX compatible terminal, package manager and fully integrated keychain built in (compared to Windows). Ever tried to get a reasonable setup for git, python, perl, ssh with PKE etc. going on Windows without pulling your hair out? With a Mac I'm productive within 1h (especially thanks to migration assistant), with Windows it takes at least a week and it's still not satisfying. In that time I'd rather setup a Hackintosh properly.
* hands down better configuration system than Windows (defaults system >>>> registry).
If you're determined to avoid other third party drivers, you can be sure to use only natively supported networking and sound devices.
That only leaves the Clover bootloader, and it's certainly true that this hasn't had an audit/is large enough that performing one would be quite a project. However, it's fully open source and receives quite a bit of interest from across the hackintosh community.
Hackintosh users are also rather small in number and mostly technically knowledgeable; there are far larger and easier userbases to target rootkits at.
Therefore, although I understand your concerns, I am not worried at all about the security of my hackintosh.
>Fedora
Desktop Linux (any variety) is in no way comparable to the usability of OS X. I say this as someone who ran desktop Linux exclusively for years.
Although now I'm just spoiled by small behaviors of OS X that I really like.