The problem and the risk [with surveillance by GCHQ] comes in the area of mass capture of data, or strategic surveillance. This is the kind of intelligence gathering that sucks in data from everyone, everywhere: from phones, internet use from email to website visits, social networking, instant messaging and video calls, and even areas such as video gaming; in short, everything digital. In the US, the Prism programme may have given the NSA access to the servers of companies such as Google and Facebook; in the UK, GCHQ has gained a similar degree of access via its Tempora programme, and the two of them together have a cable- and network-tapping capabilities collectively called Upstream, which have the ability to intercept anything that travels over the internet. This data is fed into a database called XKeyscore, which allows analysts to extract information in real time", ie immediately. What this adds up to is a new thing in human history: with a couple of clicks of a mouse, an agent of the state can target your home phone, or your mobile, or your email, or your passport number, or any of your credit card numbers, or your address, or any of your log-ins to a web service. Using that "selector", the state can get access to all the content of your communications, via any of those channels; can gather information about anyone you communicate with, can get a full picture of all your internet use, can track your location online and offline. It can, in essence, know everything about you, including - thanks to the ability to look at your internet searches - what's on your mind.