Ubiquitous communications require wireless networking and infrastructure network support. The best way to achieve this is to evolve the available technologies. The first step is to look at how the different available technologies will integrate and work with each other. One of the next steps is to seek solutions for connecting ?ubiquitous devices? to such ?integrated and heterogeneous networks?. These two steps together form the evolutionary approach towards ubiquitous communications. This paper will discuss further details of the evolutionary steps towards ubiquitous communications with prime focus on security: security of devices, networks, services, users and the integration thereof.