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Wireless sensor networks are considered ideal candidates for a wide range of applications. It is desirable and sometimes necessary to reprogram sensor nodes through wireless links after they are deployed to remove bugs or add new functionalities. Several approaches (e.g., Seluge, Sluice) have been proposed recently for secure code dissemination in wireless sensor networks, all as security extensions to the state-of-the-art code dissemination system named Deluge. However, existing approaches all focused on securing the propagation of code images, but overlooked the security vulnerabilities in other image management aspects such as rebooting and erasing code images. In this paper, the authors identify the security vulnerabilities in epidemic image management in all existing solutions to secure code dissemination in wireless sensor networks.
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