Estrazione mineraria di dati; FBI ha lanciato la rete larga per l'Info

AP

Le richieste di FBI alle aziende di telecomunicazioni sono andato oltre invitare le annotazioni del telefono dei clienti sotto sospetto per includere le analisi dei loro più vasti modelli della comunicazione con altre pure, esposizione recentemente ottenuta dei documenti. Di FBI ha usato le lettere di sicurezza nazionale per chiedere le informazioni “sulla Comunità più larga di interesse„ collegato agli individui sotto sospetto, secondo i documenti. La tecnica dato-estraente può porre i collegamenti nudi di E-mail e del telefono che legano insieme le reti al contrario indistinguibili degli individui. Law enforcement officials value that sort of data as a means of identifying a suspect’s potential conspirators. Privacy advocates say it can ensnare people with no tie to illegal or suspicious activity. The “community of interest” requests were included in more than 2,500 pages of FBI documents the Electronic Frontier Foundation, a watchdog group, obtained through the Freedom of Information Act. The New York Times first reported on the requests in a story posted to its website Saturday.

The FBI letters use boilerplate language to request companies provide calling records for redacted lists of telephone numbers, citing “exigent circumstances.” An Aug 9, 2005, letter and others from that year also include the following: “Additionally, please provide a community of interest for the telephone numbers in the attached list.” Earlier this year, the Justice Department’s inspector general uncovered 700 cases in which FBI agents obtained telephone records through such “exigent letters,” which asserted that grand jury subpoenas had been requested for the data when in fact such subpoenas never had been sought. The FBI eliminated use of the letters earlier this year. The FBI recently stopped asking for “community of interest” data, amid broader questions about the bureau’s aggressive use of national security letters, government officials told The Times. A federal judge struck down a key part of the USA Patriot Act anti-terrorism laws on Thursday, saying the FBI must justify to a court the need for secrecy if the orders to hand over phone and e-mail records will last longer than a reasonable and brief period of time.

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