Gisela Pérez de Acha reports on extremism and other topics for the Investigative Reporting Program with a focus on digital forensics and network analysis. She is also a human rights lawyer, an open source researcher at Berkeley Law’s Human Rights Center Investigations Lab, and a trainer at Amnesty International’s Digital Verification Corps, a global network of volunteers who fact-check social media posts about war crimes and human rights violations. Gisela is part of an Emmy award-winning team at the New York Times for her collaboration on the story about The Siege of Culiacán and a digital safety trainer with PEN America. Born and raised in Mexico, Gisela speaks fluent Spanish, English, French and Portuguese. She has a master’s degree from Berkeley Journalism, where she now teaches cybersecurity and open-source investigations for upcoming journalists.