Microsoft CEO Satya Nadella speaks at the Future Decoded conference in London on Nov. 10. The company hopes to create new social tools to increase productivity in and out of the workplace. Kevin Coombs/Reuters /Landov hide caption

itoggle caption Kevin Coombs/Reuters /Landov

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

itoggle caption Salvatore Di Nolfi/EPA/Landov

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

itoggle caption Feng Li/Getty Images

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

itoggle caption Aarti Shahani/NPR

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

itoggle caption Ted S. Warren/AP

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

itoggle caption Paul Sakuma/AP

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

itoggle caption Aarti Shahani/NPR