Sigillu – Secure Communications
Secure mobile communications

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Earlier this week the American Civil Liberties Union revealed a trove of documents it had obtained through Freedom of Information Requests to more than 200 police departments around the country. They show a pattern of police tracking cell phone locations and gathering other data like call logs without warrants, using devices that impersonate cell towers to intercept cellular signals, and encouraging officers to refrain from speaking about cell-tracking technology to the public, all detailed in a New York Times story.

But at least one document also details the day-to-day business of telecoms’ handing over of data to law enforcement, including a breakdown of every major carrier’s fees for every sort of data request from targeted wiretaps to so-called “tower dumps” that provide information on every user of certain cell tower. The guide, as provided by the Tucson, Arizona police department to the ACLU, is dated July 2009, and the fees it lists may be somewhat outdated.

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