Some security issues of wireless systems

Wireless systems have found wide acceptance in many industries such as military and healthcare. These systems appear under a variety of architectures including fixed networks, cellular networks, and ad hoc networks. We survey some security problems, of interest to researchers, in wireless systems when used in these environments. Most studies of the security of these systems emphasize cryptographic aspects, we concentrate on other security aspects, such as operating systems, access control, web services, and location awareness.