The Court of Justice of the European Union has struck down a major air passenger data sharing agreement between the E.U. and Canada. In a guest article, John Magee, a partner at William Fry, and Alex Cameron, a partner at Fasken Martineau, discuss the ruling and its potential repercussions, including the impact on similar agreements with Australia and the U.S., post-Brexit E.U data transfer, as well as on Canadian data protection laws. See also “Key Requirements of the Newly Approved Privacy Shield” (Jul. 20, 2016).