WASHINGTON – The head of the nation’s cybersecurity center has resigned amid persistent turf battles and confusion over the control and protection of the country’s vast computer networks and systems.

Rod Beckstrom’s decision to step down as director of the National Cybersecurity Center comes as the White House is conducting a broad 60-day review of how well the government is using technology to protect everything from classified national security data to key financial systems and air traffic control.

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