The Association of Digital Forensics, Security and Law (ADFSL)


The E911 Initiative in the mid-1990s established an opportunity to obtain location specific digital evidence of subscriber activity from cellular carriers. Call Detail Records (CDR) containing Cell Site Location Information (CSLI) evidence production was made available from cellular carriers in response to the CALEA, 911 and ECPA acts. In the late 1990s, cellular carriers began to produce evidence for investigative and litigation purposes. CDR/CSLI evidence has become an important evidentiary focus in the courtroom. This research project resulted in the creation of a method of validating cellular carrier records accuracy and mitigating errors in forensic cell site analyst conclusions. The process establishes a scientific foundation critical to satisfying key Daubert requirements. The United States Patent and Trademark Office (USPTO) awarded a patent for this methodology.


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United States v. Valle (2014), No. 12 Cr. 847 (PGG), 2014 WL 2980256 (S.D.N.Y. Jun. 30, 2014)

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