Marc Tiernan

University of Amsterdam

Marc portrait

Marc Tiernan is a PhD researcher at the University of Amsterdam and member of the project Rethinking Secondary Liability for International Crimes. Marc’s research focuses on topics of international, transnational, and comparative criminal law. He has a specific interest in examining criminal liability for harms which occur through digital technologies. Marc holds an LLB from Trinity College Dublin (2014) and an LLM in International Criminal Law from the University of Amsterdam (2017). Prior to starting his PhD, Marc worked for over two years as a legal consultant with defense teams at the Extraordinary Chambers in the Courts of Cambodia. Marc also has experience working with law firms and non-profits.

Posts by Marc Tiernan

Are Social Media Algorithms “Passive Nonfeasance”? What Twitter v. Taamneh Got Wrong

In the recent case of Twitter, Inc. v. Taamneh, the U.S. Supreme Court held that the plaintiffs failed to demonstrate that Facebook, Twitter, and Google knowingly provided assistance to the Islamic State of Iraq and the Levant (ISIS) in connection with its attack on the Reina nightclub in Istanbul, Turkey in 2017. The plaintiffs, family…

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