The four horsemen of privacy apocalypse, ranked by self-awareness:
Microsoft: Caught red-handed, frantically trying damage control.
Google: "We're the good guys because we only harvest your browsing data, not everything."
Apple: "Yes we spy, but we told you in paragraph 347 of the EULA you definitely read."
Linux: The vegan CrossFitter of operating systems. Doesn't spy and can't shut up about it.