Hackers linked to the Kremlin accessed the system of US electrical utility Burlington Electric, the company admitted Friday.

Burlington Electric said in a statement that the attack did not put its grid at risk as was previously reported by The Washington Post, which cited officials close to the White House on grounds of anonymity.

“Last night, US utilities were alerted by the Department of Homeland Security of a malware code used in Grizzly Steppe, the name DHS has applied to a Russian campaign linked to recent hacks,” said the company headquartered in Burlington, the largest city of the state of Vermont.

“We detected the malware in a single Burlington Electric Department laptop not connected to our organization’s grid systems,” said the company, adding that the laptop was isolated and federal authorities had been alerted about the incident.

“Our team is working with federal officials to trace this malware and prevent any other attempts to infiltrate utility systems,” Burlington Electric concluded.

Earlier, The Washington Post had reported that hackers linked to the Kremlin had managed to penetrate the electricity grid of the United States although they did not disrupt services.

“The incursion may have been designed to disrupt the utility’s operations or as a test to see whether they could penetrate a portion of the grid,” said the daily, citing US officials.

The Kremlin has been in the eye of the storm during recent weeks after the White House accused Russia of being behind a cyber attack against the Democratic Party and Hillary Clinton’s campaign to help Donald Trump.

On Dec. 29, US President Barack Obama ordered the expulsion of 35 Russian diplomats and imposed economic sanctions against Russian intelligence agencies, intelligence personnel and cyber security companies in response to the hacking. EFE