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Mattis declares vigilance to be the best cyber defense
Fifth Domain: Scrawled in ink at the bottom of the memo, Secretary of Defense James Mattis’ warning could not be clearer: “Be alert!”
In the lineage of warnings like “loose lips sink ships,” Mattis warned Department of Defense employees in a memo to “remain vigilant” in a world where secrets can fall into the hands of digital intruders, coming after a series of high-profile data breaches that has embarrassed America’s top defense officials.
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