Jesselyn Cook, author portrait
© Kyle M. Gager

Jesselyn Cook

Jesselyn Cook is an award-winning investigative reporter and journalism lecturer who has written extensively about online conspiracy theories and their offline harms. Prior to covering the tech beat at NBC News, she was a senior reporter on HuffPost's national enterprise desk. She holds a master's degree in journalism and international relations from New York University and was selected as a 2025 Nieman Fellow at Harvard University.