WASHINGTON: U.S. government agencies and private companies rushed Monday to secure their computer networks following the disclosure of a sophisticated and long-running cyber-espionage intrusion that experts said almost certainly was carried out by a foreign state.
It was not yet clear who was responsible for the intrusion, though it was reportedly conducted by Russia, and the extent of the damage is not yet known. The potential threat was significant enough that the Department of Homeland Securitys cybersecurity unit directed all federal agencies to remove compromised network management software and thousands of companies were expected to do the same.
What was striking about the operation was its potential scope as well as the manner in which the perpetrators managed to pierce cyber defenses and gain access to email and internal files at the Treasury and Commerce departments and potentially elsewhere. It was stark evidence of the vulnerability of even supposedly secure government networks, even after well-known previous attacks.
Its a reminder that offense is easier than defense and we still have a lot of work to do, said Suzanne Spaulding, a former U.S. cybersecurity official who is now a senior adviser to the Center for Strategic and International Studies.
The campaign came to light when a prominent cybersecurity firm, FireEye, learned it had been breached. FireEye would not say who it suspected, though many experts quickly suspected Russia given the level of skill involved, and alerted that foreign governments and major corporations were also compromised.
U.S. authorities acknowledged that federal agencies were part of the breach on Sunday, providing few details. The Cybersecurity and Infrastructure Security Agency, known as CISA, said in an unusual directive that the widely used network software SolarWinds had been compromised and should be removed from any system using it.
SolarWinds is used by hundreds of thousands of organizations around the world, including most Fortune 500 companies and multiple U.S. federal agencies. The perpetrators were able to embed malware in a security update issued by the company, based in Austin, Texas. Once inside, they could impersonate system administrators and have total access to the infected networks, experts said.
Quite honestly, my heart sank when I saw some of the details, just the amount of information they could potentially have if they are reading everyones emails and they are accessing sensitive files within places like Treasury or Commerce, said Ben Johnson, a former National Security Agency cyber-engineer who is now chief technology officer of software security firm Obsidian.
The Washington Post, citing unnamed sources, said the attack was carried out by Russian government hackers who go by the nicknames APT29 or Cozy Bear and are part of that nations foreign intelligence service.
U.S. officials have declined to say who they believe is responsible. National Security Council spokesman John Ullyot said Monday only that the Trump administration was working with the CISA, U.S. intelligence agencies, the FBI and government departments that were affected to coordinate a response to whoever was behind it.
Microsoft cybersecurity researchers on Monday tied the hacks to nation-state activity at significant scale, aimed at both government and the private sector.
Its obviously incredibly significant and widespread, said Chris Painter, who coordinated cyber-policy at the State Department during the Obama administration. How much was compromised? How much was exfiltrated? There are lots of open questions now.
Kremlin spokesman Dmitry Peskov said Monday that Russia had nothing to do with the hack.
Once again, I can reject these accusations, Peskov told reporters. If for many months the Americans couldnt do anything about it, then, probably, one shouldnt unfoundedly blame the Russians for everything.
Federal agencies have long been attractive targets for foreign hackers looking to gain insight into American government personnel and policymaking.
Hackers linked to Russia, for instance, were able to break into the State Departments email system in 2014, infecting it so thoroughly that it had to be cut off from the internet while experts worked to eliminate the infestation. A year later, a hack at the U.S. governments personnel office blamed on China compromised the personal information of some 22 million current, former and prospective federal employees, including highly sensitive data such as background investigations.
Cybersecurity experts said the nature and level of tradecraft involved in this latest effort suggest a foreign nation. Many have pointed out that the goal of the months-long effort appeared to be espionage and not information that could be quickly used for profit or to simply inflict damage. Russia was the most likely culprit, though China and perhaps others are potential candidates.
In terms of scale alone, the the operation seems similar to the Office of Personnel Management that authorities suspect was carried out by the Chinese government, said Ben Buchanan, a Georgetown University cyber-espionage expert.
The operational tradecraft how the hack was carried out seems to have been extremely good. These operators are experienced and capable, adept at finding a systemic weakness and then exploiting it quietly for months, said Buchanan, author of The Hacker and The State.
If it was carried out by a foreign government, and the U.S. has the proof, then it becomes a question of what to do about it.
Some obvious options would include expelling diplomats of the offending country, imposing sanctions or filing criminal charges for cyber-espionage, steps that Washington and the European Union have taken against Russia in the past.
Im sure that the departments like NSA and Cyber Command are coming up with options, that the Treasury Department is looking at sanction options , that the State Department is looking for how they will send a strong signal, Spaulding said. Whether they will get approval for all these things from the White House remains to be seen.
In the meantime, SolarWinds and its many private-sector clients were working to close any breaches and repair the damage.
The company said in a financial filing that it believed that an unknown number of customers, though fewer than 18,000, had installed the compromised product update earlier this year. SolarWinds has said its customers include all five branches of the U.S. military, the Pentagon, the State Department, NASA, the National Security Agency, the Department of Justice and the White House, along with the top U.S. telecommunications and financial firms, though it hasnt identified which of its customers were using the compromised product.
We anticipate this will be a very large event when all the information comes to light, said John Hultquist, director of threat analysis at FireEye.
Bajak reported from Boston.
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