The Problem of 'Personal Data' in Cloud Computing - What Information is Regulated? The Cloud of Unknowing, Part 1
W. Kuan Hon
Queen Mary University of London, School of Law - Centre for Commercial Law Studies
Queen Mary University of London, School of Law - Centre for Commercial Law Studies; Oxford Internet Institute
Queen Mary University of London, School of Law
March 10, 2011
International Data Privacy Law (2011) 1 (4): 211-228
Queen Mary School of Law Legal Studies Research Paper No. 75/2011
Cloud computing service providers, even those based outside Europe, may become subject to the EU Data Protection Directive's extensive and complex regime purely through their customers' choices, of which they may have no knowledge or control. We consider the definition and application of the EU 'personal data' concept in the context of anonymisation/pseudonymisation, encryption and data fragmentation in cloud computing, arguing that the definition should be based on the realistic risk of identification, and that the applicability of data protection rules should be based on the risk of harm and its likely severity. In particular, the status of encryption and anonymisation/pseudonymisation procedures should be clarified to promote their use as privacy-enhancing techniques; data encrypted and secured to recognised standards should not be considered 'personal data' in the hands of those without access to the decryption key, such as many cloud computing providers; and finally, unlike, for example, social networking sites, Infrastructure as a Service and Platform as a Service providers (and certain Software as a Service providers) offer no more than utility infrastructure services, and may not even know if information processed using their services is 'personal data' (hence, the 'cloud of unknowing'), so it seems inappropriate for such cloud infrastructure providers to become arbitrarily subject to EU data protection regulation due to their customers' choices.
Number of Pages in PDF File: 47
Keywords: Cloud Computing, Data Privacy, Data Protection, EU, European Union, Internet, Legal Issues, Outsourcing, Personal Data, Personal Identifying Information, Privacy
JEL Classification: K2, K20Accepted Paper Series
Date posted: March 15, 2011 ; Last revised: March 11, 2014
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