Hailo, a British ride-booking service similar to Uber, based on a smartphone app, recently abandoned its United States ambitions and is trying to protect its strength in places like London, where the app has established itself with the city’s taxi drivers. (Photograph: Chris Ratcliffe/Bloomberg)

When Arnaud Bertrand helped found HouseTrip, a vacation rental website, in 2009, his goal was to build a rival in Europe to Airbnb, which was then a y(...)

US president Barack Obama will sign the executive order after a day-long cybersecurity conference on Friday. Photograph: Alex Wong/Getty Images

US president Barack Obama is set to sign an executive order on Friday aimed at encouraging companies to share more information about cybersecurity thr(...)

When a user gives a voice command to a web-connected TV, the data is sent to a server to search for the requested content. Samsung said that it might  collect this information. (Photograph: Steve Marcus/Reuters)

Samsung has become the latest technology company to face a backlash for how data is collected from users, after it said its televisions can transmit u(...)

Teenage Waterford entrepreneur Jordan Casey is interviewed during a break at a conference on European youth in business in Madrid. Photograph: Carlos Lujan/The New York Times

When Waterford’s Jordan Casey takes to the stage to present his technology business, he jumps onto the platform rather than walking up the access ramp(...)

 Dick Costolo, CEO of Twitter, has taken personal responsibility for the social media website’s problems in dealing with abuse reported by users. Photograph: Getty

Twitter’s chief executive has taken personal responsibility for the social media website’s problems in dealing with abuse reported by users. The ackno(...)

Facebook: in a world where hacking is increasingly the criminals’ tool of choice, how well-equipped are we to drive cyber investigations in pursuit of crucial evidence?  Photograph: Reuters/Dado Ruvic

How is the criminal justice system learning to cope with the unique complexities of digital evidence, with the analysis of mobile phone data, satellit(...)

Facebook chief executive Mark Zuckerberg. The company’s fourth-quarter overall revenue rose to $3.85 billion from $2.59 billion in the year-ago period

Facebook’s revenue grew 49 percent in the fourth quarter, as mobile advertising growth helped the world’s largest Internet social network beat Wall S(...)

Marissa Mayer: “Yahoo’s Geek Goddess” as ‘Vanity Fair’ has called her.  Photograph: Jason Alden/Bloomberg

To the list of books about transformative technology companies and their visionary leaders we can now add one about Silicon Valley’s wayward soul and (...)

Investors fear that PM Alexis Tsipras and his new government’s anti-austerity stance will jeopardise liquidity. Photograph: Matt Cardy/Getty Images

European stocks were little changed as companies led by the Nordic region’s Nordea Bank and Sweden’s Electrolux advanced on positive earnings reports(...)

Yahoo CEO Marissa Mayer. The company has  unveiled a plan for a tax-free spin-off of its 15 per cent stake in China’s Alibaba.

Yahoo plans to spin off its 15 per cent stake in China’s Alibaba, responding to pressure to hand over to shareholders its prized e-commerce investment(...)