The Broad, Warrantless Reach Of National Security Letters
New court documents from one ISP's ordeal reveal just how much information the government can demand by issuing a National Security Letter.By Evan Thomas | December 1, 2015
National Security Letters are still around — and the investigative orders have a very broad reach, according to new court documents.
Calyx, a now-defunct Internet service provider, is the first company to talk about its National Security Letter ordeal.
According to unredacted filings, the FBI served the New York company a letter to collect information about a specific customer, including cell site tracking data, contact information, usernames, e-commerce records, Web browsing history and IP addresses of the people the target corresponded with.