Quick biography: Chelsea Manning
Her disclosure of hundreds of thousands of confidential military and U.S. state documents resulted in a 35-year prison sentence.
Quick biography: Julian Assange
The divisive figure founded WikiLeaks, which gained worldwide fame in 2010 for publishing secret Afghan and Iraq war files.
Quick biography: Edward Snowden
Since becoming a household name in 2013, Edward Snowden has remained in the global spotlight for his privacy advocacy and personal legal drama.
