The threat by the United Arab Emirates to shut down mobile services on BlackBerrys like e-mail and text messaging underscores a growing tension between communications companies and governments over how to balance privacy with national security.While communications companies want to be able to ensure that their customers’ messages are shielded from prying eyes, governments increasingly insist on gaining access to electronic messages to track down criminals or uncover terrorist plots.
http://www.nytimes.com/2010/08/03/technology/03blackberry.html