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WASHINGTON - U.S. President Donald Trump's administration and President-elect Joe Biden both voiced new alarm Thursday about a wide intrusion into computer systems around the world that officials suspect was carried out by Russia.
The cybersecurity unit of the U.S. Department of Homeland Security said the hack "poses a grave risk to the federal government and state, local, tribal, and territorial governments, as well as critical infrastructure entities and other private sector organizations."
The assessment by the Cybersecurity and Infrastructure Agency was the most pointed yet since news of the intrusion first emerged last weekend. Both the U.S. Treasury and Commerce departments were among the agencies whose secure data and emails were penetrated by the hack.
The cybersecurity unit warned that removing the malware inserted in the network software will be "highly complex and challenging."
Biden, set to become the 46th U.S. president after his January 20 inauguration, said, "There's a lot we don't yet know, but what we do know is a matter of great concern."
Biden said he had "instructed my team to learn as much as we can about this breach" and praised career government civil servants "who are working around-the-clock to respond to this attack."
He vowed that after he assumes power, "my administration will make cybersecurity a top priority at every level of government, and we will make dealing with this breach a top priority from the moment we take office."
Biden said he would strengthen the government's cybersecurity partnerships with the private sector.
"But a good defense isn't enough," he said. "We need to disrupt and deter our adversaries from undertaking significant cyberattacks in the first place."
"We will do that by, among other things, imposing substantial costs on those responsible for such malicious attacks, including in coordination with our allies and partners," Biden said. "Our adversaries should know that, as president, I will not stand idly by in the face of cyber assaults on our nation."