US DHS: Foreign Travel Threat Assessment: Electronic Communications Vulnerabilities 2008 (Thanks, Adam!)
Risks associated with use of electronic media overseas can be reduced through proper handling techniques. The simplest of these is to leave such devices at home. Barring that, protective measures should include using designated “travel” computers, single-use cell phones, and temporary e-mail addresses as well as refraining from communicating with a home organization’s information technology systems... Travelers should use strong passwords on devices and encryption programs for electronic files and e-mails.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.