A report entitled A Review of the Federal Bureau of Investigation’s Use of Exigent Letters and Other Informal Requests for Telephone Records (.pdf) from the Department of Justice Office of the Inspector General (OIG) indicates that between 2003 and 2005, FBI routinely “circumvented the requirements of the Electronic Communications Privacy Act (ECPA)” by using so-called “exigent letters” to obtain telephone call data from telecommunications companies. … More