krakman writes "A very interesting story on how the background to how the FBI can investigate and get details from computers over the net, without knowing anything about the computer location. Not from some conspiracy rag, but Washington Post regarding FBI "network investigative techniques":
"The man who called himself “Mo” had dark hair, a foreign accent and — if the pictures he e-mailed to federal investigators could be believed — an Iranian military uniform. When he made a series of threats to detonate bombs at universities and airports across a wide swath of the United States last year, police had to scramble every time.
Mo remained elusive for months, communicating via e-mail, video chat and an Internet-based phone service without revealing his true identity or location, court documents show. So with no house to search or telephone to tap, investigators turned to a new kind of surveillance tool delivered over the Internet."
Link to Original Source