In 2011, the US was flying one of its most advanced drones over Iran when they lost control. To their shock and embarrassment, they came to realize that the Iranians had used Russian electronic warfare technology to take over control of its navigation system. They seized the drone, decrypted its secrets, and reverse-engineered its technology to build their own version. It was a painful lesson — but have we learned it well enough to avoid such catastrophes in the future?

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