Whenever one picks up a book with an eye to writing about it, one necessarily needs to know the subject matter therein. The recent book This Is How They Tell Me The World Ends — an ungrammatical title if anything — claims to be a book about the zero-day "industry" as per the author, Nicole Perlroth, a staff reporter for the New York Times, who covers cyber security. (I dislike that word "cyber" and will use infosec right through this piece.)