Mapping out the Rosen Docket
Federal prosecutors in D.C. typically provide notice to a person after
receiving court approval to track them with geolocation data. However,
after obtaining a warrant to search journalist James Rosen's Gmail
account in May 2010, the government argued it did not have any
obligation to provide the same notice to the customer/subscriber when it
comes to email and ultimately won. The difference comes down to the
different provisions under ECPA and other procedural rules under which
the government obtains warrants for the different types of information.
Check out the ACLU's post
for an overview, or this link for my summary of the arguments contained in the recently unsealed documents. Keep
in mind that the issue here is the ECPA language applied to the
government's disclosure obligations, not the service provider's,
although the latter is often prohibited from giving the user notice.