Malicious programs that demand a ransom to restore files that they have encrypted are starting to proliferate.
A space company run by Amazon founder Jeff Bezos loses a protest over Nasa’s plans to lease out a launch pad.
How much of virtual currency’s worth is down to hype?
Google’s former top patent lawyer has been put in charge of America’s patent and trademark office (USPTO).
Coinbase, a start-up that lets people trade Bitcoins, raises $25m (£15m) in venture capital funding.
A hi-tech vision of how we will live in a decade’s time
A German law firm is seeking recompense from users alleged to have infringed copyright by streaming content online.
Photo and video sharing app Instagram has added direct messaging to its service, a nod to the success of rivals like Whatsapp and Snapchat.