Graham said he believes some content from his account was leaked but he personally doesn’t use or send emails.
“I think some of it was actually released but I've never sent an e-mail,” Graham said. “And I'm not about to start now.”
Graham stressed the hacking of his campaign vendor’s account is another attempt from the Russian government to undermine the U.S. democratic process.
“They're trying to destabilize democracy all over the world,” Graham said. “We should tell the Russians, in uncertain terms, you interfered in our elections, we don't care why. We're going to hit you and hit you hard.”