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The narrative relies on Stoll’s logbooks and diaries, cross-checked with others involved, while using aliases, altered phone numbers, and memory-based conversations without fictionalizing events. The work also acknowledges contributors, editors, and supporting institutions, framing the investigation as both technical inquiry and personal experience from astronomy to computer systems.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":10,"@type":76,"position":81},"https://docshare.wps.com/document/story-novel/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/the-cuckoos-egg-tracking-a-spy-through-the-maze-of-computer-espionage/514789/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/the-cuckoos-egg-tracking-a-spy-through-the-maze-of-computer-espionage/514789.png","ImageObject",300,407,{"name":92,"@type":93},"Ivy","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-28","2026-10-06",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why does the author describe computer security problems in the book?","Question",{"text":112,"@type":113},"The author explains the security issues clearly while arguing that many problems are already known to “black hats,” and that sharing can help the wider community understand and respond.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the author ensure the incident is reconstructed accurately?",{"text":117,"@type":113},"The author relies on logbooks and diaries and cross-checks by contacting others involved, comparing reports across people to avoid fictionalizing events.",{"name":119,"@type":110,"acceptedAnswer":120},"What personal transition leads the author into the computer investigation?",{"text":121,"@type":113},"After his astronomy grant money runs out, he is transferred from an observatory to a computer center, where he starts dealing with computing work and system environments that set the stage for the investigation.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},514789,1792901345,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":8,"category_name":10,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},549758252649,"https://ap-avatar.wpscdn.com/avatar/8000253669c5317157?_k=1778319167496531819","PUBLISHED BY DOUBLEDAY  \na division of Bantam Doubleday Dell Publishing Group, Inc.  \n666 Fifth Avenue, New York, New York 10103  \nDOUBLEDAY and the portrayal of an anchor with a dolphin are trademarks of Doubleday, a division of Bantam Doubleday Dell Publishing Group, Inc.  \nLibrary of Congress Cataloging-in-Publication Data  \nStoll, Clifford.  \nThe cuckoo’s egg : tracking a spy through the maze of computer espionage / by Clifford Stoll.—1st ed.  \n[p. cm](p. cm).  \n1. Hess, Marcus. 2. Stoll, Clifford. 3. Espionage, Soviet—United States. 4. Espionage, Soviet—Germany (West)—Hannover. 5. Defense information, Classified—United States—Databases. 6. Computer crimes—United States. 7. Computer crimes—Germany (West)—Hannover. I. Title.  \nUB271.R92H477 1989  \n364.1′68′0973—dc20 89-7808  \n364.1′68′0973—dc20  \neISBN: 978-0-307-81942-0 Copyright © 1989 by Clifford Stoll All Rights Reserved  \nv3.1_r2  \nContents  \nCover  \nTitle Page  \nCopyright  \nAcknowledgments  \nChapter 1  \nChapter 2  \nChapter 3  \nChapter 4  \nChapter 5  \nChapter 6  \nChapter 7  \nChapter 8  \nChapter 9  \nChapter 10  \nChapter 11  \nChapter 12  \nChapter 13  \nChapter 14  \nChapter 15  \nChapter 16  \nChapter 17  \nChapter 18  \nChapter 19  \nChapter 20  \nChapter 21  \nChapter 22  \nChapter 23  \nChapter 24  \nChapter 25  \nChapter 26  \nChapter 27  \nChapter 28  \nChapter 29  \nChapter 30  \nChapter 31  \nChapter 32  \nChapter 33  \nChapter 34  \nChapter 35  \nChapter 36  \nChapter 37  \nChapter 38  \nChapter 39  \nChapter 40  \nChapter 41  \nChapter 42  \nChapter 43  \nChapter 44  \nChapter 45  \nChapter 46  \nChapter 47  \nChapter 48  \nChapter 49  \nChapter 50  \nChapter 51  \nChapter 52  \nChapter 53  \nChapter 54  \nChapter 55  \nChapter 56  \nEpilogue Bibliography About the Author  \nHow do you spread the word when a computer has a security hole? Some say nothing, fearing that telling people how to mix explosives will encourage them to make bombs. In this book I’ve explicitly described some of these security problems, realizing that people in black hats are already aware of them.  \nI’ve tried to reconstruct this incident as I experienced it. My main sources are my logbooks and diaries, cross-checked by contacting others involved in this affair and comparing reports from others. A few people appear under aliases, several phone numbers are changed, and some conversations have been recounted from memory, but there’s no fictionalizing.  \nFor supporting me throughout the investigation and writing, thanks to my friends, colleagues, and family. Regina Wiggen has been my editorial mainstay; thanks also to Jochen Sperber, Jon Rochlis, Dean Chacon, Donald Alvarez, Laurie McPherson, Rich Muller, Gene Spafford, Andy Goldstein, and Guy Consolmagno.  \nI posted a notice to several computer networks, asking for title suggestions. Several hundred people from around the world replied with zany ideas. My thanks to Karen Anderson in San Francisco and Nigel Roberts in Munich for the title and subtitle.  \nDoubleday’s editors, David Gernert and Scott Ferguson, have helped me throughout. To them, as well as my agent, John Brockman, thanks for your continued encouragement and wise advice.  \nTo each of these people, I’m indebted; I owe most of them boxes of cookies as well.  \nLawrence Berkeley Laboratory supported me throughout this quest; the people of Smithsonian Astrophysical Observatory—especially Joe Schwarz and Steve Murray—have been most gracious and supportive while I’ve been writing this book. My deep thanks go to my friends at both institutes, and my hopes that I’ll now be able to return to astronomy.  \nI was ten years old when Ernst Both of the Buffalo Museum of Science invited me to look through a telescope, opening up a universe of astronomy. I wonder if I’ll ever be able to thank him properly.  \nI needn’t thank my sweetheart and wife, Martha Matthews. She’s been as much a part of writing this book as she was in the story. I love  \nher with all my heart.  \n—Cliff Stoll-Matthews  \n[cliff@cfa.harvard.edu](cliff@cfa.harvard.edu)  ","cbCaimexsd84fKCj","https://ap.wps.com/l/cbCaimexsd84fKCj","pdf",2130549,354,"English","# Contents\n## Chapter 1\n## Chapter 2\n## Chapter 3\n## Chapter 4\n## Chapter 5\n## Chapter 6\n## Chapter 7\n## Chapter 8\n## Chapter 9\n## Chapter 10\n## Chapter 11\n## Chapter 12\n## Chapter 13\n## Chapter 14\n## Chapter 15\n## Chapter 16\n## Chapter 17\n## Chapter 18\n## Chapter 19\n## Chapter 20\n## Chapter 21\n## Chapter 22\n## Chapter 23\n## Chapter 24\n## Chapter 25\n## Chapter 26\n## Chapter 27\n## Chapter 28\n## Chapter 29\n## Chapter 30\n## Chapter 31\n## Chapter 32\n## Chapter 33\n## Chapter 34\n## Chapter 35\n## Chapter 36\n## Chapter 37\n## Chapter 38\n## Chapter 39\n## Chapter 40\n## Chapter 41\n## Chapter 42\n## Chapter 43\n## Chapter 44\n## Chapter 45\n## Chapter 46\n## Chapter 47\n## Chapter 48\n## Chapter 49\n## Chapter 50\n## Chapter 51\n## Chapter 52\n## Chapter 53\n## Chapter 54\n## Chapter 55\n## Chapter 56\n## Epilogue\n## Bibliography\n## About the Author","[{\"question\":\"Why does the author describe computer security problems in the book?\",\"answer\":\"The author explains the security issues clearly while arguing that many problems are already known to “black hats,” and that sharing can help the wider community understand and respond.\"},{\"question\":\"How does the author ensure the incident is reconstructed accurately?\",\"answer\":\"The author relies on logbooks and diaries and cross-checks by contacting others involved, comparing reports across people to avoid fictionalizing events.\"},{\"question\":\"What personal transition leads the author into the computer investigation?\",\"answer\":\"After his astronomy grant money runs out, he is transferred from an observatory to a computer center, where he starts dealing with computing work and system environments that set the stage for the investigation.\"}]","The Cuckoo’s Egg - Tracking a Spy through the Maze of Computer Espionage | PDF",1791302039,545]