Yunsi Fei, PhD

Yunsi Fei, PhD is a cybersecurity and hardware security expert specializing in side-channel analysis and protection. With a career spanning integrated circuit design, secure computer architecture, and machine learning systems, she brings a multidisciplinary approach to her litigation work. Her work centers on investigating side-channel vulnerabilities, assessing hardware security measures, and evaluating whether design implementations meet industry standards.

Dr. Fei has been retained in numerous expert witness and consulting engagements across the United States, involving cases in the semiconductor and electronic design industries. Her PhD in Electrical Engineering from Princeton University, along with her designation as an IEEE Fellow, reinforce her ability to deliver objective, defensible analyses. She is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of responsibility in disputes involving hardware security and electronic design automation.