The SolarWinds hack targeting the US Treasury has affected the agency's unclassified systems, but its classified systems remain safe, Treasury Secretary Steve Mnuchin said.
"At this point we do not see any break-in to our classified systems. Our unclassified systems have been accessed," Mnuchin said, speaking to CNBC on Monday.
"I assure you we are completely on top of this," Mnuchin added, referring to the breach.
US officials have issued contradictory statements regarding the severity of the hack, which reportedly targeted SolarWinds' Orion software and allowed cyber criminals to access the data of government and corporate clients, including the Treasury, the Departments of Homeland Security, State, Health and Human Services, Energy, Defence, Commerce, and Agriculture as well as state and local governments, Cisco Systems, Equifax, Microsoft, and an unnamed think tank.
US Blame Game
Secretary of State Mike Pompeo blamed Russia for the attack, saying there were signs that Russia was "pretty clearly" responsible, although he has not presented any evidence. President Donald Trump, meanwhile, appeared to blame China and dismissed the "Russia, Russia, Russia" narrative as a "priority chant when anything happens because the 'lamestream' is, for mostly financial reasons, petrified of discussing the possibility that it may be China."
Russian presidential spokesman Dmitry Peskov dismissed the hacking claims on Monday, accusing US officials who blame Moscow of continuing "the kind of blind Russophobia that is resorted to following any incident." Chinese Foreign Ministry spokesperson Wang Wenbin reacted in a similar manner, accusing the US of "politicising" cybersecurity and of slinging mud at Beijing "in an attempt to tarnish China's image."
In August, cryptographer and NSA whistleblower Bill Binney said in an interview with Sputnik that US intelligence agencies have the technical capability to spoof hack attacks to make them look like they came from Russia, China, and a host of other countries.