University of Pennsylvania
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Christopher S. Yoo is the Imasogie Professor in Law & Technology; Professor of Communication; Professor of Computer & Information Science; the Founding Director of theCenter for Technology, Innovation & Competition; and the Faculty Co-Director of the Penn Center of Media, Technology, and Democracy at the University of Pennsylvania. He is the author of 4 books and over 130 other scholarly works and has taught at over a dozen universities around the world.
Professor Yoo received his A.B. from Harvard University, his M.B.A. from UCLA, and his J.D. from Northwestern University. Before entering the academy, Professor Yoo clerked for Justice Anthony M. Kennedy of the Supreme Court of the United States and Judge A. Raymond Randolph of the U.S. Court of Appeals for the D.C. Circuit. He also practiced law with the D.C. firm of Hogan & Hartson (now Hogan Lovells) under the supervision of now-Chief Justice of the United States John G. Roberts, Jr. He previously taught at the Vanderbilt Law School, where he founded the Technology and Entertainment Law Program.
He is frequently called to testify before the U.S. Congress, Federal Communications Commission, Federal Trade Commission, Antitrust Division of the U.S. Department of Justice,foreign governments, and international organizations.
He has served one of the Principal Investigators on National Science Foundation grants on “Legal Barriers to Securing the Routing Infrastructure” and “Security and Privacy-Aware Cyber- Physical Systems.” He recently served as a member of the Federal Communication Commission’s Broadband Deployment Advisory Committee, a Consultant to the Administrative Conference of the United States’s project on “Protected Materials in Public Rulemaking Dockets,” a member of the Board of Advisors for the American Law Institute’s (ALI’s) Project on Principles of Law for Data Privacy and the Restatement of Principles for a Data Economy (joint with the European Law Institute), and as a Non-Governmental Advisor to the International Competition Network. He is currently serving as an Advisor to the ALI’s new project on Principles of the Law, Civil Liability for Artificial Intelligence (AI), co-leader of an initiative to create technically implementable AI standards, and Co-Chair of the ITU’s inaugural Academic Advisory Body on Emerging Technologies.
Abstract: Across the Internet, mistaken and malicious routing announcements impose significant costs on users and network operators. To make routing announcements more reliable and secure, Internet coordination bodies have encouraged network operators to adopt the Resource Public Key Infrastructure (“RPKI”) framework. Despite this encouragement, RPKI’s adoption rates are low, especially in North America.
This talk discusses the results of a year-long investigation into the hypothesis—widespread within the network operator community—that legal issues pose barriers to RPKI adoption and are one cause of the disparities between North America and other regions of the world. On the basis of interviews and analysis of the legal framework governing RPKI, the report evaluates the issues raised by community members and proposes a number of strategies to reduce or circumvent the barriers that are material. The report also describes substantial action taken by the American Registry for Internet Numbers (“ARIN”) and other private organizations in light of public dialogue about RPKI.
Monday, September 28, 2026 Zoom Link Meeting ID: 982 8593 4405 Passcode: 318714 Amy Gutmann Hall, Room 414 3317 Chestnut Street Philadelphia, PA 19104
