WASHINGTON (AP) — The elite Russian hackers who gained access to computer systems of federal agencies last year didn’t bother trying to break one by one into the networks of each department.
Instead, they got inside by sneaking malicious code into a software update pushed out to thousands of government agencies and private companies.
It wasn’t surprising that hackers were able to exploit vulnerabilities in what’s known as the supply chain to launch a massive intelligence gathering operation. U.S. officials and cybersecurity experts have sounded the alarm for years about a problem that has caused havoc, including billions of dollars in financial losses, but has defied easy solutions from the government and private sector.
“We’re going to have to wrap our arms around the supply-chain threat and find the solution, not only for us here in America as the leading economy in the world, but for the planet,” William Evanina, who resigned last week as the U.S. government’s chief counterintelligence official, said in an interview. “We’re going to have to find a way to make sure that we in the future can have a zero-risk posture, and trust our suppliers.”
In general terms, a supply chain refers to the network of people and companies involved in the development of a particular product, not dissimilar to a home construction project that relies on a contractor and a web of subcontractors. The sheer number of steps in that process, from design to manufacture to distribution, and the different entities involved give a hacker looking to infiltrate businesses, agencies and infrastructure numerous points of entry.
This can mean no single company or executive bears sole responsibility for protecting an entire industry supply chain. And even if most vendors in the chain are secure, a single point of vulnerability can be all that foreign government hackers need. In practical terms, homeowners who construct a fortress-like mansion can nonetheless find themselves victimized by an alarm system that was compromised before it was installed.
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The most recent case targeting federal agencies involved Russian government hackers who are believed to have sneaked malicious code into popular software that monitors computer networks of businesses and governments. That product is made by a Texas-based company called SolarWinds that has thousands of customers in the federal government and private sector.
That malware gave hackers remote access to the networks of multiple agencies. Among those known to have been affected are the departments of Commerce, Treasury and Justice.
For hackers, the business model of directly targeting a supply chain is sensible.
“If you want to breach 30 companies on Wall Street, why breach 30 companies on Wall Street (individually) when you can go to the server — the warehouse, the cloud — where all those companies hold their data? It’s just smarter, more effective, more efficient to do that,” Evanina said.
President Joe Biden has said he will make cybersecurity a priority and will impose costs on adversaries who carry out attacks.
Supply chain protection will presumably be a key part of those efforts, and there is clearly work to be done. A Government Accountability Office report from December said a review of 23 agencies’ protocols for assessing and managing supply chain risks found that only a few had implemented each of seven “foundational practices” and 14 had implemented none.
U.S. officials say the responsibility can’t fall to the government alone and must involve coordination with private industry.
But the government has tried to take steps, including through executive orders and rules. A provision of the National Defense Authorization Act barred federal agencies from contracting with companies that use goods or services from five Chinese companies, including Huawei. The government’s formal counterintelligence strategy made reducing threats to the supply chain one of five core pillars.
Perhaps the best-known supply chain intrusion before SolarWinds is the NotPetya attack in which malicious code found to have been planted by Russian military hackers was unleashed through an automatic update of Ukrainian tax-preparation software, called MeDoc. That malware infected its customers, and the attack overall caused more than $10 billion in damage globally.
The Justice Department in September charged five Chinese hackers who it said had compromised software providers and then modified source code to allow for further hacks of the providers’ customers. In 2018, the department announced a similar case against two Chinese hackers accused of breaking into cloud service providers and injecting malicious software.
“Anyone surprised by SolarWinds hasn’t been paying attention,” said Rep. Jim Langevin, a Rhode Island Democrat and member of the Cyberspace Solarium Commission, a bipartisan group that issued a white paper calling for the protection of the supply chain through better intelligence and information sharing.
Part of the appeal of a supply chain attack is that it’s “low-hanging fruit,” said Brandon Valeriano, a cybersecurity expert at the Marine Corps University. A senior adviser to the solarium commission, he says it’s not really known just how dispersed the networks are and that flaws in the supply chain are not uncommon.
“The problem is we basically don’t know what we’re eating.” Valeriano said. “And sometimes it comes up later that we choke on something — and often we choke on things.”
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