"I've been involved in politics for nearly five decades," he said. "This definitely is the first campaign that I've been involved with in which I've had to tangle with Russian intelligence agencies … who seem to be doing everything that they can on behalf of our opponent."
Government officials last week said they are "confident" that the Russian government is behind the recent cyber attacks.
"The recent disclosures of alleged hacked e-mails on sites like DCLeaks.com and WikiLeaks and by the Guccifer 2.0 online persona are consistent with the methods and motivations of Russian-directed efforts," the Department of Homeland Security and Office of the Director of National Intelligence on Election Security said in a joint statement on Oct. 7. "These thefts and disclosures are intended to interfere with the US election process."
The Russian government has denied any involvement in the attacks. Speaking at a business forum on Wednesday, Russian President Vladimir Putin said both Democrats and Republicans are using Russia as a distraction in order to further their own agendas.
"They started this hysteria, saying this (hacking) is in Russia's interests, but this has nothing to do with Russia's interests," he said, according to Reuters.