Rachel Weiner

Secret law enforcement requests to conduct electronic surveillance in domestic criminal cases have surged in federal courts for Northern Virginia and the District, but only one in a thousand of the applications ever becomes public, newly released data show. The bare-bones release by the courts leaves unanswered how long, in what ways and for what crimes federal investigators tracked individuals’ data and whether long-running investigations result in charges. Yet the listings of how often law enforcement applied to judges to conduct covert electronic surveillance — a list that itself is usually sealed — underscore the exponential growth in the use of a 1986 law to collect data about users’ telephone, email and other Internet communications.