Online surveillance is a growing danger for journalists, bloggers, citizen-journalists and human rights defenders. The PRISM surveillance scandal has consumed the Internet as the implications of massive scale U.S. Government spying begin to sink in. It is possible to avoid all kinds of surveillance by using anonymizing services like virtual private networks (VPNs), orencrypts your content and hides your origin very effectively when used correctly. If you want to shield against eavesdropping or stop the NSA obtaining records of who you are calling and when, there are a few options.
Source: https://thehackernews.com/2013/06/digital-privacy-internet-surveillance.html