United States
Investigators crack draft e-mail communications
The FBI's probe into CIA chief David Petraeus extra-marital affair revealed that even draft e-mails can be hacked into.
The FBI (Federal Bureau of Investigation) combines the role of a US federal police force and an internal intelligence service. It comes under the authority of the Department of Justice and oversees the police authorities at the federal level. A member of the US intelligence community, the FBI often competes with the CIA on terrorism and counterintelligence cases.