William Long is a partner in the London office of Sidley Austin LLP. He advises international clients on a wide variety of data protection, privacy, information security, social media, e-commerce and other regulatory matters. Mr. Long has experience with EU and international data protection and privacy projects particularly in the life sciences and financial services sectors, advising on cross-border data transfer, document discovery, data security and other data protection issues. He is a regular speaker on data protection, social media and e-commerce matters. Mr. Long is recognized in Chambers UK for Data Protection. Mr Long has also been a member of the European Advisory Board on the International Association of Privacy Professionals.