As we continue to share our every thought and move with the world online, it's hard to know who knows what about us. So, what happens if we make our supposedly private data available for all to see?
Focus of the ongoing battle between governments and tech companies over privacy, encryption and security shifts to Brazil.
The amount of data we're producing is rapidly increasing, and governments are desperate to access it. But where should the line be drawn between security and privacy?
Who is filmmaker Laura Poitras? And why did Edward Snowden choose her to break the story of the century?