A second government document released April 30 summarizes wiretaps, typically related to terrorism and espionage, performed under the Foreign Intelligence Surveillance Act (FISA) in 2003. The two-page letter offers few details, saying only that all but four of 1,727 requests for FISA wiretaps were approved last year.
Voice preferred medium for wiretapping
Only 4 percent of wiretaps not related to terrorism were targeted at computers and electronic devices last year, a government report shows.

