I will just ignore the "ooh conspiracy theory" stupid opinions above, and tell you just A COUPLE OF THINGS:
1) google for "PRISM SCANDAL"
2) Google for "NSA MICROSOFT SPY"
3) Google for "CIA BSD BACKDOOR"
Ok, so now people discover that USA keeps logging ALL info, talks, chats, friends, phone calls (google NSA SPYING AMERICANS CONGRESS 2005 AT&T)
Well, not even MY government can spy on me, but USA can? The guy said that he can even spy presidents and companies, and, in most cases, THEY DO, even to steal privileged info, like patent projects to steal them for usa companies and register ahead.
USA government pays like 200k dollars to 1 million for any exploits, and you think that the stupid african that made ubuntu is above of it?
They pay even to hardware companies to make hardware exploits, they infected the most audited system in the world, bsd, when they don infect the code they infect the binaries...
There are so many ways to do it...
Do you know that microsoft is one of the biggest contributors on writing linux codes?
You think they are concerned just with virtualization? pfffff
Until someone rapes stupid north americans and the world declares WAR on them, they will insist on commiting crimes and violating other peoples rights.
Go and use the most secure system on the world, unless you have an old ISA NIC, they will have access to bypass it. By hardware or software, by tapping, by trojans, every way they will log you.
Now that the prism guy SHUTTED UP stupid people crying "oooh conspiracy theoryyyyy" i am amazed to see they are still here writing "i am glad google and the government logs all my chats".
NOW THAT THAT EX NSA INTELLIGENCE AGENT TOLD THAT WHEN THEY WANTTO SCREW SOMEONE THEY RESEARCH LOGS OF HIS FRIENDS AND CHATS OVER 15 YEARS, WOULD YOU NOW STOP BEING STUPID, PEOPLE?