Wireless networks of low-power sensing devices are poised to become a ubiquitous part of the computing landscape. Proposed applications of these networks range from health care to warfare. The challenge for the information security community is to develop the common security services (confidentiality, integrity, etc.) for sensor networks in a manner that meets the very strict resource constraints of these devices. This forum will describe a broad range of on-going research efforts in order to acquaint the general information security community with the issues and concerns of sensor net security.