Demystifying Lawful Intercept and CALEA TMC

The value of collected information

January 9, 2007
There are two “domains” when it comes to lawful intercept, one is the carrier’s premises and the other is law enforcements’ premises. The carrier domain is tasked with access and delivery while law enforcement is more concerned with collection, recording and analysis; with the emphasis on analysis. While both sides are required in order to generate the information necessary to execute a successful wiretap, it is the collection function that makes the information useful and valuable.

The Collection Function is a PC based application that law enforcement uses to build their cases and create evidence. It receives and stores information from subpoenas for call records, warrants for Pen Register / Trap & Trace intercepts and Title III intercepts. From these various sources of information a chronological list of events is accumulated and retained for analysis.

Analysis focuses on finding and building relationships based on the information obtained during the intercept. The information includes calling and called parties, time of the calls, call duration and various other attributes of the call. In addition of course is the call (content) itself. The events of the call are automatically associated with the appropriate call so that the law enforcement agent can efficiently determine the flow of the call (call waiting, conference call etc.) as it is being reviewed.

In addition to matching call data with the appropriate call to decipher activities on the call, the collection functions also seek to build relationships or “links” with other events in its’ database. By automatically identifying these relationships within the data (i.e. a commonly called number shared by two targets), law enforcement is better able to establish patterns and areas of influence for that target.

While electronic surveillance and the automated implementation of wiretaps in networks are making the wiretap process more efficient, it is the capabilities of the collection function that are making the information more valuable.



Related Tags: , , , , ,

Listed below are links to sites that reference The value of collected information:

Trackback Pings

TrackBack URL for The value of collected information:
http://blog.tmcnet.com/mt3/t.fcgi/31507

Comments to The value of collected information


(If you haven't left a comment here before, you may need to be approved by the site owner before your comment will appear. Until then, it won't appear on the entry. Thanks for waiting.)