Digital Evidence and Computer Crime

Forensic Science, Computers, and the Internet

3rd Edition - April 12, 2011
Author: Eoghan Casey
Language: English
Paperback ISBN:
9 7 8 - 0 - 1 2 - 8 1 0 3 2 8 - 9
Hardback ISBN:
9 7 8 - 0 - 1 2 - 3 7 4 2 6 8 - 1
eBook ISBN:
9 7 8 - 0 - 0 8 - 0 9 2 1 4 8 - 8

Digital Evidence and Computer Crime, Third Edition, provides the knowledge necessary to uncover and use digital evidence effectively in any kind of investigation. It offers a t… Read more

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Digital Evidence and Computer Crime, Third Edition, provides the knowledge necessary to uncover and use digital evidence effectively in any kind of investigation.

It offers a thorough explanation of how computer networks function, how they can be involved in crimes, and how they can be used as a source of evidence. In particular, it addresses the abuse of computer networks as well as privacy and security issues on computer networks.

This updated edition is organized into five parts. Part 1 is about digital forensics and covers topics ranging from the use of digital evidence in the courtroom to cybercrime law. Part 2 explores topics such as how digital investigations are conducted, handling a digital crime scene, and investigative reconstruction with digital evidence. Part 3 deals with apprehending offenders, whereas Part 4 focuses on the use of computers in digital investigation. The book concludes with Part 5, which includes the application of forensic science to networks.

New to this edition are updated information on dedicated to networked Windows, Unix, and Macintosh computers, as well as Personal Digital Assistants; coverage of developments in related technology and tools; updated language for search warrant and coverage of legal developments in the US impacting computer forensics; and discussion of legislation from other countries to provide international scope. There are detailed case examples that demonstrate key concepts and give students a practical/applied understanding of the topics, along with ancillary materials that include an Instructor's Manual and PowerPoint slides.

This book will prove valuable to computer forensic students and professionals, lawyers, law enforcement, and government agencies (IRS, FBI, CIA, CCIPS, etc.).

Acknowledgments
Author Biographies
Introduction
Digital Forensics
Chapter 1. Foundations of Digital Forensics

1.1 Digital Evidence
1.2 Increasing Awareness of Digital Evidence
1.3 Digital Forensics: Past, Present, and Future
1.4 Principles of Digital Forensics
1.5 Challenging Aspects of Digital Evidence
1.6 Following the Cybertrail
1.7 Digital Forensics Research
1.8 Summary

Chapter 2. Language of Computer Crime Investigation

2.1 Language of Computer Crime Investigation
2.2 The Role of Computers in Crime
2.3 Summary

Chapter 3. Digital Evidence in the Courtroom

3.1 Duty of Experts
3.2 Admissibility
3.3 Levels of Certainty in Digital Forensics
3.4 Direct versus circumstantial evidence
3.5 Scientific Evidence
3.6 Presenting Digital Evidence
3.7 Summary

Chapter 4. Cybercrime Law

4.1 Federal Cybercrime Law
4.2 State cybercrime law
4.3 Constitutional law
4.4 Fourth Amendment
4.5 Fifth Amendment and encryption

Chapter 5. Cybercrime Law

5.1 The European and National Legal Frameworks
5.2 Progression of Cybercrime Legislation in Europe
5.3 Specific Cybercrime Offenses
5.4 Computer-Integrity Crimes
5.5 Computer-Assisted Crimes
5.6 Content-Related Cybercrimes
5.7 Other Offenses
5.8 Jurisdiction
5.9 Summary
Digital Investigations

Chapter 6. Conducting Digital Investigations

6.1 Digital Investigation Process Models
6.2 Scaffolding for Digital Investigations
6.3 Applying the Scientific Method in Digital Investigations
6.4 Investigative Scenario: Security Breach
6.5 Summary

Chapter 7. Handling a Digital Crime Scene

7.1 Published Guidelines for Handling Digital Crime Scenes
7.2 Fundamental Principles
7.3 Authorization
7.4 Preparing to Handle Digital Crime Scenes
7.5 Surveying the Digital Crime Scene
7.6 Preserving the Digital Crime Scene
7.7 Summary

Chapter 8. Investigative Reconstruction with Digital Evidence

8.1 Equivocal Forensic Analysis
8.2 Victimology
8.3 Crime Scene Characteristics
8.4 Threshold Assessments
8.5 Summary

Chapter 9., Motive, and Technology

9.1 Axes to Pathological Criminals and Other Unintended Consequences
9.2 Modus Operandi
9.3 Technology and Modus Operandi
9.4 Motive and Technology
9.5 Current Technologies
9.6 Summary
Apprehending Offenders

Chapter 10. Violent Crime and Digital Evidence

10.1 The Role of Computers in Violent Crime
10.2 Processing The Digital Crime Scene
10.3 Investigative Reconstruction
10.4 Conclusions

Chapter 11. Digital Evidence as Alibi

11.1 Investigating an Alibi
11.2 Time as Alibi
11.3 Location as Alibi
11.4 Summary

Chapter 12. Sex Offenders on the Internet

12.1 Old Behaviors, New Medium
12.2 Legal Considerations
12.3 Identifying and Processing Digital Evidence
12.4 Investigating Online Sexual Offenders
12.5 Investigative Reconstruction
12.6 Case Example: Scott Tyree3
12.7 Case Example: Peter Chapman6
12.8 Summary

Chapter 13. Computer Intrusions

13.1 How Computer Intruders Operate
13.2 Investigating Computer Intrusions
13.3 Forensic Preservation of Volatile Data
13.4 Post-Mortem Investigation of a Compromised System
13.5 Investigation of Malicious Computer Programs
13.6 Investigative Reconstruction
13.7 Summary

Chapter 14. Cyberstalking

14.1 How Cyberstalkers Operate
14.2 Investigating Cyberstalking
14.3 Cyberstalking case example3
14.4 Summary
Computers

Chapter 15. Computer Basics for Digital Investigators

15.1 A Brief History of Computers
15.2 Basic Operation of Computers
15.3 Representation of Data
15.4 Storage Media and Data Hiding
15.5 File Systems and Location of Data
15.6 Dealing with Password Protection and Encryption
15.7 Summary

Chapter 16. Applying Forensic Science to Computers

16.1 Preparation
16.2 Survey
16.3 Documentation
16.4 Preservation
16.5 Examination and Analysis
16.6 Reconstruction
16.7 Reporting
16.8 Summary

Chapter 17. Digital Evidence on Windows Systems

17.1 File Systems
17.2 Data Recovery
17.3 Log Files
17.4 Registry
17.5 Internet Traces
17.6 Program Analysis
17.7 Summary

Chapter 18. Digital Evidence on UNIX Systems

18.1 UNIX Evidence Acquisition Boot Disk
18.2 File Systems
18.3 Overview of Digital Evidence Processing Tools
18.4 Data Recovery
18.5 Log Files
18.6 File System Traces
18.7 Internet Traces
18.8 Summary

Chapter 19. Digital Evidence on Macintosh Systems

19.1 File Systems
19.2 Overview of Digital Evidence Processing Tools
19.3 Data Recovery
19.4 File System Traces
19.5 Internet Traces
19.6 Summary

Chapter 20. Digital Evidence on Mobile Devices

Network Forensics

Chapter 21. Network Basics for Digital Investigators

21.1 A brief history of computer networks
21.2 Technical Overview of Networks
21.3 Network Technologies
21.4 Connecting Networks Using Internet Protocols
21.5 Summary

Chapter 22. Applying Forensic Science to Networks

22.1 Preparation and Authorization
22.2 Identification
22.3 Documentation, Collection, and Preservation
22.4 Filtering and Data Reduction
22.5 Class/Individual Characteristics and Evaluation of Source
22.6 Evidence Recovery
22.7 Investigative Reconstruction
22.8 Reporting Results
22.9 Summary

Chapter 23. Digital Evidence on the Internet

23.1 Role of the internet in criminal investigations
23.2 Internet Services: Legitimate Versus Criminal Uses
23.3 Using the Internet as an Investigative Tool
23.4 Online Anonymity and Self-Protection
23.5 E-mail Forgery and Tracking
23.6 Usenet Forgery and Tracking
23.7 Searching and Tracking on IRC
23.8 Summary

Chapter 24. Digital Evidence on Physical and Data-Link Layers

24.1 Ethernet
24.2 Linking the Data-Link and Network Layers: Encapsulation
24.3 Ethernet versus ATM Networks
24.4 Documentation, Collection, and Preservation
24.5 Analysis Tools and Techniques
24.6 Summary

Chapter 25. Digital Evidence at the Network and Transport Layers

25.1 TCP/IP
25.2 Setting Up a Network
25.3 TCP/IP-Related Digital Evidence
25.4 Summary

Case Index
Name Index
Subject Index

Eoghan Casey

Eoghan Casey is an internationally recognized expert in data breach investigations and information security forensics. He is founding partner of CASEITE.com, and co-manages the Risk Prevention and Response business unit at DFLabs. Over the past decade, he has consulted with many attorneys, agencies, and police departments in the United States, South America, and Europe on a wide range of digital investigations, including fraud, violent crimes, identity theft, and on-line criminal activity. Eoghan has helped organizations investigate and manage security breaches, including network intrusions with international scope. He has delivered expert testimony in civil and criminal cases, and has submitted expert reports and prepared trial exhibits for computer forensic and cyber-crime cases.

In addition to his casework and writing the foundational book Digital Evidence and Computer Crime, Eoghan has worked as R&D Team Lead in the Defense Cyber Crime Institute (DCCI) at the Department of Defense Cyber Crime Center (DC3) helping enhance their operational capabilities and develop new techniques and tools. He also teaches graduate students at Johns Hopkins University Information Security Institute and created the Mobile Device Forensics course taught worldwide through the SANS Institute. He has delivered keynotes and taught workshops around the globe on various topics related to data breach investigation, digital forensics and cyber security.

Eoghan has performed thousands of forensic acquisitions and examinations, including Windows and UNIX systems, Enterprise servers, smart phones, cell phones, network logs, backup tapes, and database systems. He also has information security experience, as an Information Security Officer at Yale University and in subsequent consulting work. He has performed vulnerability assessments, deployed and maintained intrusion detection systems, firewalls and public key infrastructures, and developed policies, procedures, and educational programs for a variety of organizations. Eoghan has authored advanced technical books in his areas of expertise that are used by practitioners and universities around the world, and he is Editor-in-Chief of Elsevier's International Journal of Digital Investigation.

Affiliations and expertise

Eoghan Casey, cmdLabs, Baltimore, MD, USA

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