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 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.