Computers are now available anytime, anywhere, by different means, and distributed unobtrusively throughout the everyday environments in which physical objects/artifacts embedded with invisible computers are sensible and networked locally and globally. Such "any" computers open tremendous opportunities to provide numerous novel services/applications in both real world and cyber spaces, and exist ubiquitously in our daily life, working, learning, traveling, entertainment, medicine, etc. Although it is yet unclear what exactly the real-cyber integrated worlds would be, there is no doubt that they must be safe. UbiSafe emphasizes the SAFE aspects for ubiquitous, pervasive, AmI, mobile, universal, embedded, wearable, augmented, invisible, hidden, context-aware, sentient, proactive, autonomic, or whatever it is called, computing. UbiSafe computing is focused on theories and technologies for ubiquitous artifacts to function safely for different purposes; for ubiquitous systems to work safely in various situations; and for ubiquitous environments to behave safely with all people. A series of challenges exist to let people benefit from ubiquitous services, and simultaneously guarantee their safety in making ubiquitous safe artifacts, systems, and environments. Following the great success of UbiSafe-07 held at Niagara Falls, Canada, 2007, the UbiSafe-09 Symposium provides a forum for engineers and scientists in academia, industry, and government to address all safety related profound challenges including technical, social, legal, ethical issues, to present, and discuss their ideas, theories, technologies, systems, tools, applications, work in progress and experience on all aspects of UbiSafe computing.