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One of the co-founders of the tight-lipped cybersecurity firm Darktrace peeled back some of the secrecy around the company today at TechCrunch Disrupt London, describing how investor Mike Lynch brokered a meeting between Cambridge mathematicians and spies at the British intelligence agency GCHQ to found the company.

Facebook mines your personal data. Huge amounts of it. This is easy to do as people are now spending an average of an hour on day on the site sharing personal photos, having private conversations and playing popular games such as Candy Crush Saga.

In what amounts to a very clever brute force attack, a group of researchers has figured out how to find credit card information – including expiration dates and CVV numbers – by querying ecommerce sites. The process, which was outlined in IEEE Security & Privacy, involves guessing and testing hundreds of permutations of expiration dates and CVV numbers on hundreds of sites.

With Trusted Contacts, Google is launching a new personal safety app for Android today that allows others to ping you for your location when they think you may have been in an accident or in danger.

What makes a processor the best? Some would say it's the price tag, and if money were no object this might hold weight. Others suggest that it's the number of cores of overclockability that determine the quality of a central processing unit (CPU). In reality, it's simply a matter of taste.