Voting-Machine Parts Made by Foreign Suppliers Stir Security Concerns

Technology linked to companies under authoritarian governments highlights risks; China-based suppliers don’t always mean Chinese-made parts

A voting machine that is widely used across the country contains some parts made by companies with ties to China and Russia, researchers found, fueling questions about the security of using overseas suppliers, which has also sparked scrutiny in Washington.

Voting-machine vendors could be at risk of using insecure components from such overseas suppliers, which generally are difficult to vet and monitor, said a report released Monday by Interos Inc., an Arlington, Va.-based supply-chain monitoring company that has consulted...

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