Andrew Updegrove, an attorney, has been representing technology companies, entrepreneurs and venture capitalists for more than thirty years and works with many of the organizations seeking to thwart cyber-attacks before they occur.

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S. D. Unwin started out as a theoretical physicist researching quantum fields and gravity, later turning his mathematical skills to analyzing and communicating catastrophic risk, from nuclear accidents to climate change. He settled happily on writing science fiction and One Second Per Second is his debut novel.

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Sandeep Unnithan is an executive editor with India Today where he writes on security-related issues. He is the coauthor of Operation X: The Untold Story of India's Covert Naval War in East Pakistan.

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Harlow Giles Unger was the 2008 Distinguished Visiting Fellow in American History at George Washington's Mount Vernon. A veteran journalist, broadcaster, educator, and historian, he is author of sixteen books, including five biographies of America's Founders.

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Craig Unger is the author of American Armageddon, The Fall of the House of Bush, and the New York Times bestseller House of Bush, House of Saud.

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David C. Unger has been on the editorial board of the New York Times for more than thirty years.

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Loung Ung is a national spokersperson for the Campaign for a Landmine Free World and the author of Lucky Child: A Daughter of Cambodia Reunites with the Sister She Left Behind.

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Blair Underwood, a Golden Globe–nominated actor, has received several NAACP Image Awards.

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Lamar Underwood is the former editor-in-chief of Sports Afield and Outdoor Life and former editorial director of the Outdoor Magazine Group of Harris Publications in New York. The numerous books he has edited include Tales of the Mountain Men, The Greatest Hunting Stories Ever Told, Survival Stories, and War Stories.

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Shawn Underhill is the author of the Matt Ryan series, the Live Free or Die series, and the Great North Woods Pack series.

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Thrity Umrigar is the author of seven novels. A former journalist, she was awarded a Nieman Fellowship to Harvard and was a finalist for the PEN Beyond Margins Award. A professor of English at Case Western Reserve University, she lives in Cleveland, Ohio.

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Alyx B. Porter Umphrey, MD, is the director of neuro-oncology and is assistant professor of medicine and neurology at the Mayo Clinic in Arizona. She completed her residency and neuro-oncology fellowship at the Mayo Clinic in Rochester, Minnesota.

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