Deception has always been part of the hacker playbook. But it's one thing for intruders to hide their tracks, and another to adopt an invented identity, or even frame another country for a cyberattack. Russia's hackers have done all of the above, and now gone one step further: In a series of espionage cases, they hijacked another country's hacking infrastructure, and used it to spy on victims and deliver malware.

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