Christo Buschek is a Pulitzer Prize-winning investigative journalist, technology researcher and software developer. One of Buschek's notable contributions is his open-source software called Sugarcube. This software has played a crucial role in preserving a comprehensive collection of documentation on war crimes in Syria. The data collected through Sugarcube has informed international bodies such as the ICC, the OPCW, and IIIM at the UN.

In collaboration with Alison Killing and Megha Rajagopalan, Buschek published an investigation exposing an extensive network of hundreds of buildings in Xinjiang, China, bearing the hallmarks of prisons and internment camps in Xinjiang.

Buschek was a Knowing Machines fellow at the Engelbert Center for Policy and Law at New York University, examining the histories, practices, and politics of training machine learning systems how to interpret the world. Buschek was also a 2025 Senior Fellow at Mozilla, where he continued his work on dataset investigation.