1. An Introduction to Computer Forensics Jim Lindsey Western Kentucky University September 28, 2007

2. What are we talking about? Forensic … Forensic …

3. What are we talking about? Forensic Science is the use of science to investigate and establish facts in criminal and civil cases. Forensic Science is the use of science to investigate and establish facts in criminal and civil cases.

4. What are we talking about? Computer Forensics is the discovery, collection, and analysis of evidence found on computers and networks. Computer Forensics is the discovery, collection, and analysis of evidence found on computers and networks.

5. Interdisciplinary Field Investigator Legal Professional Computer Professional Computer Forensics Forensic Examiners have to know about computers, how to perform an investigation and about the law. Forensic Examiners have to know about computers, how to perform an investigation and about the law. Your job is to simply find the facts! Your job is to simply find the facts!

6. Why should I care? Computers and the Internet are the fastest growing technologies used in crime (criminal and civil). Computers and the Internet are the fastest growing technologies used in crime (criminal and civil). BTK and Scott Peterson Murder Cases BTK and Scott Peterson Murder Cases Enron and Worldcom Cases Enron and Worldcom Cases Human Resource Matters Human Resource Matters ID Theft and Divorce Matters ID Theft and Divorce Matters

7. Deleted Files

8. The Computer Forensic Process Gather the materials to be analyzed. Gather the materials to be analyzed. Must be done legally! Must be done legally! Establish the chain of custody. Establish the chain of custody. Get all needed devices. Get all needed devices. Preserve the media. Preserve the media. Write blockers Write blockers Bit for bit images Bit for bit images Extract the evidence. Extract the evidence. What is relevant to the case? What is relevant to the case? Again, must be done legally! Again, must be done legally!

9. The Computer Forensic Process Analyze computer media. Analyze computer media. Forensic HW Forensic HW Forensic SW Forensic SW Document the results. Document the results. Report your findings! Report your findings! Consider the audience that will read the report! Consider the audience that will read the report!

10. Computer Forensics At Work Deleted Files Deleted Files Tracking Packet Routes Tracking Packet Routes Analyzing Network Traffic Analyzing Network Traffic Analyzing Mobile Devices Analyzing Mobile Devices Analyzing ISP Logs Analyzing ISP Logs Analyzing Chat Logs Analyzing Chat Logs Analyzing a Packet Trace Analyzing a Packet Trace

11. Summary Defined computer forensics Defined computer forensics Established why it is important for you to know about the topic Established why it is important for you to know about the topic Described the computer forensic process Described the computer forensic process Looked at examples of tasks performed by computer forensic examiners Looked at examples of tasks performed by computer forensic examiners