Participants in an ethical hacking contest at a Swiss security conference in Geneva in March. So-called bug bounty programs are becoming very popular in Silicon Valley's high-tech sector. Salvatore Di Nolfi/EPA/Landov hide caption
Aarti Shahani
Army researchers will try to find ways to 3-D print nutritious food with less heavy packaging than the current military meals. Aarti Shahani/NPR hide caption
A customer sets up her new iPhone 6 at an Apple store in Beijing on Friday. A group says the Chinese government backed an attack against users of Apple's iCloud service, but the government denies the claim. Feng Li/Getty Images hide caption
Ramzi El-Fekih, CEO of Creova, stands in his server room in Tunis. He has built a mobile payments company, but because of banking restrictions, Tunisians can use his product only for domestic purchases. Aarti Shahani/NPR hide caption
Apple Pay is demonstrated at Apple headquarters in Cupertino, Calif. Marcio Jose Sanchez/AP hide caption
Microsoft says it's patching a Windows security flaw cited in a report on alleged spying by Russian hackers. Ted S. Warren/AP hide caption
Yahoo co-founder Jerry Yang at the 2008 Consumer Electronics Show in Las Vegas. Yahoo will gain nearly $8 billion from the Alibaba IPO because of its $1 billion investment in Alibaba 2005. Paul Sakuma/AP hide caption
Cyberstalking victims often don't know they're being tracked through their own phone because spyware apps like mSpy use misleading labels (labeled "android.sys.process" here) and don't take up much data. Aarti Shahani/NPR hide caption
Amazon CEO Jeff Bezos introduces the new Amazon Fire phone June 18 in Seattle. Ted S. Warren/AP hide caption
Lyft driver Danielle Kerley showcases the company's iconic mustache, which is displayed on cars used in the service. Aarti Shahani/NPR hide caption
Uber is hiring David Plouffe, the mastermind of Obama's 2008 campaign, to power its own political strategy. What can a tech-savvy political animal offer a ride-sharing service? Charles Dharapak/AP hide caption
Security expert Jose Molina discovered he could control "every device in every room" of a luxury hotel in China. Aarti Shahani/NPR hide caption