I Ran the N.S.A. This Is How to Defeat China’s Hacker Army.

General Haugh led the National Security Agency and U.S. Cyber Command.

Behind the pageantry that will be on display during President Trump’s meeting with President Xi Jinping of China this week is a less pleasant reality. For at least the last decade, Beijing has been actively targeting America’s telecommunications networks, intellectual property and electrical and water utilities in a sustained campaign of intrusion.

The summit provides an opportunity to raise the issue more forcefully with Mr. Xi than American leaders have in the past. But America also has its own unpleasant reality to face: Protecting the country from bad........

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