You are right, but Linux is superior here, because it is open source and you know everything about it. For Windows you can simply buy a 0day and that's it. When

You are right, but Linux is superior here, because it is open source and you know everything about it. For Windows you can simply buy a 0day and that's it. When you write something for Linux, you can't be sure the targeted program is even on the distribution. The NSA has excellent experience when it comes to secure UNIX systems. They published a very long RedHead guide somewhere, was posted on HN some time ago. But in reality there is no way they share their knowledge, totally different organization and different contractor so synergies are lost for sure. How much energy would be saved when you don't try to reinvent the wheel every time.