A newly disclosed National Security Agency document illustrates the striking acceleration of the use of cyberweapons by the United States and Iran against each other, both for spying and sabotage, even as Secretary of State John Kerry and his Iranian counterpart met in Geneva to try to break a stalemate in the talks over Iran’s disputed nuclear program.
The document, which was written in April 2013 for Gen. Keith B. Alexander, then the director of the National Security Agency, described how Iranian officials had discovered new evidence the year before that the United States was preparing computer surveillance or cyberattacks on their networks.