A cyberattack on the New York Times may have been limited to its bureau in Moscow, the publication said Tuesday evening.

"We are constantly monitoring our systems with the latest available intelligence and tools," said Eileen Murphy, a spokeswoman for the Times. "We have seen no evidence that any of our internal systems, including our systems in the Moscow bureau, have been breached or compromised."

A CNN report earlier in the day claimed the FBI and other law enforcement agencies were investigating a cyberattack on American journalists by hackers linked potentially to the Russian government, but did not state who had been targeted other than employees of the Times.

Contrary to the CNN report, the Times said it did not hire any outside firms to investigate the incident, though it is worth noting that cybersecurity firms often prefer to keep their activity confidential.

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Targeting journalists is not a new activity for governments to engage in, though experts say that Russia has become responsible for more of it over the last couple of years, potentially replacing one of its Eastern neighbors as the world's chief offender.

"We've seen other groups conduct similar operations against media companies, in particularly China-based groups," said Nick Rossmann, a senior manager in threat intelligence at cybersecurity firm FireEye. "China targeted the Times as well in 2013."

"We have observed a persistent uptick in Russian activity since the Ukraine crisis began two years ago," Rossmann added. "There's diplomatic aggressiveness, aggressiveness on the battlefield, and it's often also integrated into cyberspace activity as well … So I think you might be seeing some reflection of that in media interests right now."