Sidley Austin LLP

William Long

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William Long is a global co-leader of Sidley's highly ranked Privacy and Cybersecurity practice and also leads the EU data protection practice at Sidley. William advises international clients on a wide variety of GDPR, data protection, privacy, information security, social media, e-commerce and other regulatory matters. William has been a member of the European Advisory Board of the International Association of Privacy Professionals (IAPP) and on the DataGuidance panel of data protection lawyers. He is also on the editorial board of e-Health Law & Policy and also assists with dplegal (“data privacy” legal), a networking group of in-house lawyers in life sciences companies examining international data protection issues.




William is also the author of a new book on the EU General Data Protection Regulation and a contributor to a number of books on data protection, including leading legal text books published by BNA in the area of privacy, cloud computing and the use of health data. William has been interviewed widely for his thought leadership, including in such leading publications as the international New York Times, Financial Times, Guardian and writes for a number of publications, including Data Protection Law & Policy, Computer Weekly, Cloud Pro and CIO Today.