The third most common origin of attacks was the United States, which accounted for 18 percent of all attacks.
Surprisingly, the second most common origin of attacks was Romania, where hackers accounted for 28 percent of all data breaches.
"We know of a couple of hundred individuals in China and Brazil, a hundred in Russia and similar numbers in North Korea," said Brian Grayek, vice president of product development for CA, a company specialising in tools to identify the origin of attacks.
Again, transparency and information sharing is essential: Every sound effort to implement such rules and standards relies on feedback about vulnerabilities, as well as data on the quantity, quality and origin of attacks.
"At this stage, we're still making our best efforts to trace the origin of attacks, keeping all kinds of possibilities open," he said.
One noncommissioned officer pulled aside a reporter and vented about the origins of the attacks.
Eliot Higgins is the founder of the Bellingcat investigative journalism network and lead author of the report Origins of Artillery Attacks on Ukrainian Military Positions in Eastern Ukraine Between 14 July 2014 and 8 August 2014.
The Swedish and German foreign minister, Anna Lindh and Joschka Fischer, both suggested that it was too early to talk of military action when so little was known about the origins of the attacks.
While the origins of the attacks were not known, both countries have had tense relations with Russia, and Russian hackers are believed to have been responsible for earlier, similar incidents.
China said it was "careless" to blame it when the origins of hack attacks were hard to pinpoint.
