In particular, countries gearing up for cyber offensives are the US, Israel, Russia, China and France, says the report, which was compiled by former White House Homeland Security adviser Paul Kurtz and based on interviews with more than 20 experts in international relations, national security and internet security.
"We don't believe we've seen cases of cyber warfare," said Dmitri Alperovitch, vice president of threat research at McAfee. "Nations have been reluctant to use those capabilities because of the likelihood that [a big cyberattack] could do harm to their own country. The world is so interconnected these days."
For more, read "Report: Countries prepping for cyber war on CNET News.
