WikiLeaks is among the most controversial institutions of the last decade, and this essay contributes to an understanding of WikiLeaks by revealing the philosophical paradigm at the foundation of Julian Assange’s worldview: cypherpunk ethics. The cypherpunk movement emerged in the early-1990s, advocating the widespread use of strong cryptography as the best means for defending individual privacy and resisting authoritarian governments in the digital age. For the cypherpunks, censorship and surveillance were the twin evils of the computer age, but they viewed (...) encryption as a means to circumvent both. As a cypherpunk, Assange advocates for the use of cryptography in the fight for individual privacy as well as the fight for global justice. His cosmopolitan disposition is informed by his hacker background, antiwar principles, and Enlightenment outlook. This essay places Assange’s philosophical idea in historical context, exploring his views on censorship, surveillance, and the right to communicate. It also connects his cypherpunk principles to WikiLeaks, showing that the strategy of encouraging data leaks from powerful political and economic organizations is classic cypherpunk political praxis. (shrink)