A special hacking unit of the U.S. National Security Agency intercepts deliveries of new computer equipment en route to plant spyware, according to a report on Sunday from Der Spiegel, a German publication.
The method, called "interdiction," is one of the most successful operations conducted by the NSA's Office of Tailored Access Operations (TAO), which specializes in infiltrating computers, wrote the publication, citing a top-secret document.

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