Smartphones: Pocketable Endpoints or Network Backdoor?
By Lyne Bourque
April 1, 2008
In today's corporate environment, very few people are without some kind of cell phone. And many phones have more functions and options than the average user needs. For better or worse, they are a ubiquitous part of life, and for many, they are simply indispensable.
Backdoors, in this context, describe non-obvious devices and technologies that can interface with a network and pry open an attack vector that most security mechanisms don't account for. For example, unauthorized wireless access points can be considered backdoors. Software backdoors -- and the paranoia surrounding them -- is a topic for another site... 
clipped from: www.blackberrytoday.com