New technologies permit online businesses to reduce expenses and increase efficiency by, for example, storing information in "the cloud", engaging in online tracking and targeted advertising, location and tracking technologies, and biometrics. However, the potential for technology to facilitate long term retention of customers' personal information raises concerns about the competing right of individuals to the privacy of their personal information. Although the European Commission has recently released a proposal for regulation to "provide a data subject with the right to be forgotten and to erasure", neither the OECD Privacy Guidelines nor the APEC Privacy Framework includes any requirement to delete personal information. While New Zealand includes a "limited retention principle" in the Privacy Act 1993, apart from one limited exception the privacy principles cannot be enforced in court. Taking New Zealand privacy law as an example, this paper examines the issue of retention of customer data, explains why this is a serious problem and argues that although it could be addressed by appropriate amendments to domestic laws, domestic privacy legislation may not be sufficient in an online environment. In the same way as other areas of law, such as the intellectual property regime, have turned to global regulatory standards which reflect the international nature of their subject matter, international privacy regulation should be the next stage for the information privacy regime. (C) 2013 Susan Corbett. Published by Elsevier Ltd. All rights,reserved.