Privacy Threat Model for Mobile

An interesting article by at where he discuss the threat modeling privacy threats for mobile phones.

Evaluating privacy vulnerabilities in the mobile space can be a difficult and ad hoc process for developers, publishers, regulators, and researchers. This is due, in significant part, to the absence of a well-developed and widely accepted privacy threat model. With 1 million UDIDs posted on the Internet this past week, there is an urgent need for such a model to identify privacy vulnerabilities, assess compliance, scope potential solutions, and drive disclosure. This is not to say that there aren’t a number of excellent resources that provide lists of normative best practices for mobile app development. Several such resources come readily to mind: the EFF’s Mobile Bill of Rights, Future of Privacy Forum’s Best Practices for Mobile App Developers, and Via Forensics’ 42 Best Practices.

What seems to be lacking, however, is a logical and complete picture of the privacy characteristics and vulnerabilities—i.e. a model or models—of the mobile ecosystem and, more specifically, its component platforms. The idea that privacy threat models generally—not just for mobile—haven’t received adequate attention is an observation that has also come up in the literature. In 2010, a group of researchers from the Interdisciplinary Institute for Broadband Technology (IBBT) noted that the absence of such a model contrasted vividly with the security space where such models (i.e. security threat models) are widely used. M. Deng, K. Wuyts, R. Scandariato, B. Preneel and W. Joosen, A Privacy Threat Analysis Framework: Supporting the Elicitation and Fulfillment of Privacy Requirements, IBBT: 2010 Belgium. That observation, with respect to mobile, is as true today as it was in 2010.

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