A wireless sensor network is only as good as the information it
produces. In this respect, the most important concern is information security.
Indeed, in most application domains sensor networks will constitute a mission
critical component requiring commensurate security protection. Sensor network
communications must prevent disclosure and undetected modification of
exchanged messages. Due to the fact that individual sensor nodes are anonymous
and that communication among sensors is via wireless links, sensor
networks are highly vulnerable to security attacks. If an adversary can
thwart the work of the network by perturbing the information produced,
stopping production, or pilfering information, then the perceived usefulness
of sensor networks will be drastically curtailed.  Thus, security is a major
issue that must be resolved in order for the potential of wireless sensor
networks to be fully exploited.

This talk is concerned with a number of novel solutions to the important problem of
securing wireless sensor networks.