Petraeus Case Highlights Online Civil Liberties Concerns

The FBI investigation that toppled the director of the CIA, David H. Petraeus, and now threatens to tarnish the reputation of the top American commander in Afghanistan underscores a danger that civil libertarians have long warned about: that in policing the Web for crime, espionage and sabotage, government investigators will unavoidably invade the private lives of Americans. What began as a private, and far from momentous, conflict between two women has had incalculable public costs.