Business travelers engaged in sensitive financial matters may need to make confidential phone calls back to the home office. In his advice for visitors to high-threat countries, Mandiant's Bejtlich recommends business travelers purchase a disposable mobile phone while in the country to help safeguard against attackers snooping local communication networks. If you must carry an iPhone, technologies to secure messages are emerging. San Francisco startup Wickr encrypts data on mobile devices, enabling users to send self-destructing text, photo, video, voice and PDF messages to other Wickr users. The company made its debut this year as a finalist in the Innovation Sandbox at the 2013 RSA security conference.