What is the fine-grained topic of the following text: R. David Edelman, who heads to Project on Technology, Economy and National Security for the Massachusetts Institute of Technology and worked as the international cyber policy director during Obama’s presidency, admits that U.S. cyber policy had been “cautious” but points out the highly unpredictable nature of cyberattacks‘ outcomes. Only return the topic.
U.S. Cyber Policy under Obama's Presidency