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In-Vivo Bytecode Instrumentation for Improving Privacy on Android Smartphones in Uncertain Environments
In this paper we claim that an efficient and readily applicable means to
improve privacy of Android applications is: 1) to perform runtime monitoring by
instrumenting the application bytecode and 2) in-vivo, i.e. directly on the
smartphone. We present a tool chain to do this and present experimental results
showing that this tool chain can run on smartphones in a reasonable amount of
time and with a realistic effort. Our findings also identify challenges to be
addressed before running powerful runtime monitoring and instrumentations
directly on smartphones. We implemented two use-cases leveraging the tool
chain: BetterPermissions, a fine-grained user centric permission policy system
and AdRemover an advertisement remover. Both prototypes improve the privacy of
Android systems thanks to in-vivo bytecode instrumentation.Comment: ISBN: 978-2-87971-111-
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