Wireless sensor networks are groups of inexpensive, geographically
distributed nodes that may be used to monitor
such things as environmental pollution, vehicle safety, building
safety, warehouse inventories and the health of patients. As
the technology continues to mature, we expect to see more
widespread deployments of these networks over a broader
range of applications. Given the critical nature of some of
these applications, it is important to ensure that the wireless
sensor network architecture is robust enough to remain useful
and secure even in the presence of adversaries.