Generate text that refutes this claim: The use of meta data causes unintentional harm  The other possible harm is unintentional. The amount of data involved is huge and too much even for a vast organization like the NSA to actually physically look at. Instead it uses data mining. This is why the NSA wants data that may seem useless to others. The records of which phone numbers are phoning who, as the NSA was obtaining of Verizon, might seem useless but can tell them who you are contacting, and how much contact time they have. In turn they could look at who your contacts have been talking to and if it turns out that several of them talk regularly to suspected terrorists then even if you are innocent a finger of suspicion might be pointed. There has even been a study showing that individuals can be identified from just the time of call and nearest cell phone tower after just four calls. [1] PRISM gives the NSA even more ‘useless’ data to play with. The results of this data mining may usually be accurate but will not always be so and the result of being flagged like this can be problematic for individuals. It may mean additional airport security, having problems getting a visa, [2] or in the worst case finding its way onto a no fly list.  [1] De Montjoye, Yves-Alexandre, et al., ‘Unique in the Crowd: The privacy bounds of human mobility’, Scientific Reports, 3, 25 March 2013,   [2] Brown, Ian, ‘Yes, NSA surveillance should worry the law-abiding’, guardian.co.uk, 10 June 2013,
e free speech and privacy politics government digital freedoms privacy
Metadata and data-mining are not new they are simply becoming more frequent, and more accurate as a result of more information. In the past there have been other ways of collecting data; tax records, voter registration, reverse telephone directories. [1] At the same time government and the intelligence agencies are not even those who make most use of this, there are whole private companies devoted to sifting this data. [2] There is little reason why we should particularly worry about this being done by intelligence agencies.  [1] Gomez, David, ‘Hoovered’, Foreign Policy, 11 June 2013,   [2] See the debatabase debate ‘ This House would not allow companies to collect/sell the personal data of their clients ’.