William Long Email & Phone Number

William Long is global co-chair of Sidley’s highly ranked Privacy and Cybersecurity practice and heads the EU Data Protection group. He is also a member of the firm’s top-ranked Crisis Management and Strategic Response team. He also serves on the firm’s AI Working Group. William advises international clients on a wide variety of AI, GDPR, cyber incident, 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 was previously in-house counsel to one of the world’s largest international financial services groups. He has been a member of a number of working groups in London and Europe looking at the EU regulation of e-commerce and data protection and spent a year at the UK’s Financial Law Panel (established by the Bank of England) as assistant to the chief executive working on regulatory issues with online financial services.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 textbooks 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 and The Guardian and writes for a number of publications, including Thomson Reuters, Law360, and Global Data Review.Attorney Advertising. Prior results do not guarantee a similar outcome.

Listed skills include Privacy Law, Data Privacy, Legal Advice, International Law, and 13 others.

• 

  Partner

  Sidley Austin

  Sep 2001 - Present