"People are aware that Windows has bad security but they are underestimating the problem because they are thinking about third parties.

What about security against Microsoft?

Every non-free program is a 'just trust me program'. 'Trust me, we're a big corporation. Big corporations would never mistreat anybody, would we?' Of course they would! They do all the time, that's what they are known for. So basically you mustn't trust a non free programme."

"There are three kinds: those that spy on the user, those that restrict the user, and back doors. Windows has all three. Microsoft can install software changes without asking permission. Flash Player has malicious features, as do most mobile phones."

"Digital handcuffs are the most common malicious features. They restrict what you can do with the data in your own computer. Apple certainly has the digital handcuffs that are the tightest in history. The i-things, well, people found two spy features and Apple says it removed them and there might be more""

From:

Richard Stallman: 'Apple has tightest digital handcuffs in history'
www.newint.org/features/web-exclusive/2012/12/05/richard-stallman-interview/