The government spies us!
On 2013 Edward Snowden, revealed that the government spied us since 2008, they mostly use facebook and cyberspace programs, so they could check your computer without you knowing it. After revealing this, he was called a traitor to the US government and was forced to escape to Hong Kong and then to Russia. He is still there right now, he got a residency permit and he has to extend it to 2020.
They could be watching you