Nicole Perlroth, who writes about cybersecurity and digital espionage for The New York Times, is the author of This is How They Tell Me the World Ends: The Cyber Weapons Arms Race (Bloomsbury). It’s a chilling tale about how the world, and the United States in particular, has grown increasingly vulnerable to cyber attacks by nation-states and contract cyber warriors. She has covered this beat for the Times since 2011. Prior to that, she wrote about startups and venture capital for Forbes. Perl