-- Federal authorities are investigating a series of cyberattacks on The New York Times and other U.S. media organizations, and they believe those web-based assaults were "probably" carried out by the same Russian hackers who recently infiltrated Democratic organizations, a source familiar with the probe told ABC News.
The intrusions were discovered in recent months, and it's unclear exactly why the hackers would have targeted news outlets. Journalists, however, routinely interact with countless officials across the U.S. government as part of their jobs.
ABC News was unable to determine what other news outlets, aside from The New York Times, were hit. CNN first reported the intrusions and subsequent investigation.
The New York Times said its Moscow bureau was targeted, but noted no "internal systems" were breached.
"We are constantly monitoring our systems with the latest available intelligence and tools. We have seen no evidence that any of our internal systems, including our systems in the Moscow bureau, have been breached or compromised," the Times said in a statement on Tuesday evening.
For months, the FBI has been investigating what appear to be coordinated cyberattacks on Democratic organizations, with the hacking of the Democratic National Committee being the most damaging so far.
The FBI declined to comment for this article.
Referring to cyber warfare, Clapper said it is not "terribly different than what went on during the heyday of the Cold War," just with different tools and "a different modality." And, he said, the U.S. intelligence community is now "at war" with Russia, conducting operations every hour of every day against Russia and other adversaries.
Nevertheless, Clapper said he's "taken aback a bit by ... the hyperventilation over" the hack of the DNC, adding in a sarcastic tone, "I'm shocked somebody did some hacking. That’s never happened before."
The American people "just need to accept" that cyber threats and computer-based attacks are a major long-term challenge facing the United States, and he said Americans should "not be quite so excitable when we have yet another instance of it."