NSA collects millions of text messages daily in 'untargeted' global sweep | World news ... - 0 views
www.theguardian.com/...-daily-untargeted-global-sweep
surveillance state NSA GCHQ NSA-targets SMS text-messages
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The National Security Agency has collected almost 200 million text messages a day from across the globe, using them to extract data including location, contact networks and credit card details, according to top-secret documents. The untargeted collection and storage of SMS messages – including their contacts – is revealed in a joint investigation between the Guardian and the UK’s Channel 4 News based on material provided by NSA whistleblower Edward Snowden. The documents also reveal the UK spy agency GCHQ has made use of the NSA database to search the metadata of “untargeted and unwarranted” communications belonging to people in the UK.
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The NSA program, codenamed Dishfire, collects “pretty much everything it can”, according to GCHQ documents, rather than merely storing the communications of existing surveillance targets. The NSA has made extensive use of its vast text message database to extract information on people’s travel plans, contact books, financial transactions and more – including of individuals under no suspicion of illegal activity. An agency presentation from 2011 – subtitled “SMS Text Messages: A Goldmine to Exploit” – reveals the program collected an average of 194 million text messages a day in April of that year. In addition to storing the messages themselves, a further program known as “Prefer” conducted automated analysis on the untargeted communications.
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• Over 800,000 financial transactions, either through text-to-text payments or linking credit cards to phone users The agency was also able to extract geolocation data from more than 76,000 text messages a day, including from “requests by people for route info” and “setting up meetings”. Other travel information was obtained from itinerary texts sent by travel companies, even including cancellations and delays to travel plans.
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• More than 5 million missed-call alerts, for use in contact-chaining analysis (working out someone’s social network from who they contact and when) • Details of 1.6 million border crossings a day, from network roaming alerts • More than 110,000 names, from electronic business cards, which also included the ability to extract and save images.
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The Prefer program uses automated text messages such as missed call alerts or texts sent with international roaming charges to extract information, which the agency describes as “content-derived metadata”, and explains that “such gems are not in current metadata stores and would enhance current analytics”. On average, each day the NSA was able to extract:
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Communications from US phone numbers, the documents suggest, were removed (or “minimized”) from the database – but those of other countries, including the UK, were retained. The revelation the NSA is collecting and extracting personal information from hundreds of millions of global text messages a day is likely to intensify international pressure on US president Barack Obama, who on Friday is set to give his response to the report of his NSA review panel.
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While US attention has focused on whether the NSA’s controversial phone metadata program will be discontinued, the panel also suggested US spy agencies should pay more consideration to the privacy rights of foreigners, and reconsider spying efforts against allied heads of state and diplomats. In a statement to the Guardian, a spokeswoman for the NSA said any implication that the agency’s collection was “arbitrary and unconstrained is false”. The agency’s capabilities were directed only against “valid foreign intelligence targets” and were subject to stringent legal safeguards, she said.
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“In contrast to [most] GCHQ equivalents, DISHFIRE contains a large volume of unselected SMS traffic,” it states (emphasis original). “This makes it particularly useful for the development of new targets, since it is possible to examine the content of messages sent months or even years before the target was known to be of interest.” It later explains in plain terms how useful this capability can be. Comparing Dishfire favourably to a GCHQ counterpart which only collects against phone numbers that have specifically been targeted, it states “Dishfire collects pretty much everything it can, so you can see SMS from a selector which is not targeted”.
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The document also states the database allows for broad, bulk searches of keywords which could result in a high number of hits, rather than just narrow searches against particular phone numbers: “It is also possible to search against the content in bulk (e.g. for a name or home telephone number) if the target’s mobile phone number is not known.” Analysts are warned to be careful when searching content for terms relating to UK citizens or people currently residing in the UK, as these searches could be successful but would not be legal without a warrant or similar targeting authority. However, a note from GCHQ’s operational legalities team, dated May 2008, states agents can search Dishfire for “events” data relating to UK numbers – who is contacting who, and when.