Apps and 3rd party software is a slippery slope. Anti-canon Nikon fanboys creating viruses, spyware, anti virus software. No thank you. I spend enough on my camera equipment. I don't want to worry about outside influences ruining my shots.
You over estimate the technical skills of most "fanboys".
Ever wonder why there's no real viruses for Linux and Unix, compared to the gajillions for windows?
Generally because anyone with the knowledge of *nix systems enough to write a virus for them are also users, and don't want to ruin their own systems too...
No, I don't wonder because I know what the answer is and you're wrong.
Simply put, there is no virus/spy-ware threat.