September 29, 2020
Two years have passed since the Supreme Court held in Carpenter v. United States, 585 U.S. ___, 138 S.Ct. 2206 (2018), that the government carried out a Fourth Amendment search […]
June 24, 2019
While preparing to teach a recent class about search warrants for digital devices, I spoke with a number of experts in digital forensics. Each conversation was very helpful. Almost all […]
June 6, 2016
Last year, a panel of the Fourth Circuit decided United States v. Graham, 796 F.3d 332 (4th Cir. 2015). The panel ruled that “the government conducts a search under the […]
August 10, 2015
The Fourth Circuit just decided United States v. Graham, an important case about law enforcement access to cell site location information (CSLI). This post summarizes the case, explains its importance […]
May 7, 2015
On Tuesday, the Eleventh Circuit ruled, en banc, that law enforcement may obtain historical cell site location information without a search warrant, using a court order based on less than […]
August 7, 2013
Maybe so, according to a recent Reuters report. Apparently, the Special Operations Division of the DEA receives information from the NSA and passes it to DEA field agents. The agents […]
August 1, 2013
I wrote here about how law enforcement officers may obtain historical information about the location of a suspect’s cellular phone. There have been several developments in the law since then, […]
December 16, 2010
I’ve written about law enforcement access to electronic communications, both on this blog and, more extensively, in this Administration of Justice Bulletin. One major issue is how and when law […]
November 12, 2009
As I mentioned last week, I have a new publication entitled Prosecution and Law Enforcement Access to Information about Electronic Communications. It’s meant to be useful on a range of […]