Reuters report of hackers working for Russia are monitoring internal email traffic at U.S. Treasury and Commerce department.
The hack being extremely serious has reportedly led to a National Security Council meeting at the White house, Reuters report.
Officials have not announced the breach but Commerce department confirmed there was an unusual activity at one of its agencies servers, and that Cybersecurity and Infrastructure Security Agency and the FBI are informed for conducting investigations.
John Ullyot, spokesman to National Security Council told Reuters that they “are taking all necessary steps to identify and remedy any possible issues related to this situation.”
The American government have not formally identified who might be behind the hacking, but people familiar with investigation told the news firm “Russia is currently believed to be responsible for the attack, two of the people is said to have been responsible for the hack on FireEye, A major cybersecurity company, that has governmental and commercial contracts.
In a statement at Facebook, Russian Foreign Ministry, described allegations as another unfounded attempt by the U.S. media to blame Russia for cyberattacks.
Hackers have previously broke into NTIA’s office software, Microsoft Office 365, and staff emails were monitored for months – sources reported to media firm.
According to Reuters, Neither Microsoft Nor Treasury officials had commented over the matter.