Bruce Sterling's 1993 nonfiction book "The Hacker Crackdown: Law And Disorder On The Electronic Frontier" is available for free download

It has a foreword that explains why it's available for free download. From the Amazon listing for the updated version:

Bruce Sterling delves into the world of high-tech crime and punishment in one of the first books to explore the cyberspace breaches that threaten national security. From the crash of AT&T’s long-distance switching system to corporate cyberattacks, he investigates government and law enforcement efforts to break the back of America’s electronic underground in the 1990s. In this modern classic, “Sterling makes the hackers - who live in the ether between terminals under noms de net such as VaxCat - as vivid as Wyatt Earp and Doc Holliday. His book goes a long way towards explaining the emerging digital world and its ethos” (Publishers Weekly).

This edition features a new preface by the author that analyzes the sobering increase in computer crime over the twenty-five years since The Hacker Crackdown was first published.