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COEN 252 Computer Forensics

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mark-barnes
13 diapositives · 316 Views · Nov 30, 2014

COEN 252 Computer Forensics. Introduction to Computer Forensics. Thomas Schwarz, S.J. 2006. Computer Forensics. Digital Investigation Focuses on a digital device Computer Router Switch Cell-phone SIM-card …. Computer Forensics. Digital Investigation

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COEN 252 Computer Forensics
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  1. COEN 252 Computer Forensics Introduction to Computer Forensics Thomas Schwarz, S.J. 2006

  2. Computer Forensics • Digital Investigation • Focuses on a digital device • Computer • Router • Switch • Cell-phone • SIM-card • …

  3. Computer Forensics • Digital Investigation • Focuses on a digital device involved in an incident or crime • Computer intrusion • Generic criminal activity • Perpetrator uses internet to gather information used in the perpetration of a crime. • Digital device is an instrument of a crime • Perpetrator uses cell-phone to set-off a bomb. • Details are sensitive to natural security. If you get clearance, I can tell you who to ask. • Email scams • Internet auction fraud • Computer is used for intrusion of another system.

  4. Computer Forensics • Digital Investigation • Has different goals • Prevention of further intrusions. • Goal is to reconstruct modus operandi of intruder to prevent further intrusions. • Assessment of damage. • Goal is to certify system for safe use. • Reconstruction of an incident. • For criminal proceedings. • For organization-internal proceedings.

  5. Computer Forensics • Digital Investigation • Process where we develop and test hypotheses that answer questions about digital events. • We can use an adaptation of the scientific method where we establish hypotheses based on findings and then (if possible) test our hypotheses against findings resulting from additional investigations.

  6. Computer Forensics • Evidence • Procedural notion • That on what our findings are based. • Legal notion • Defined by the “rules of evidence” • Differ by legislation • “Hear-say” is procedurally evidence, but excluded (under many circumstances) as legal evidence.

  7. Computer Forensics • Forensics • Used in the “forum”, especially for judicial proceedings. • Definition: legal

  8. Computer Forensics • Digital Crime Scene Investigation Process • System Preservation Phase • Evidence Searching Phase • Event Reconstruction Phase • Note: • These phases are different activities that intermingle.

  9. Computer Forensics • Who should know about Computer Forensics • Those involved in legal proceedings that might use digital evidence • Judges, Prosecutors, Attorneys, Law Enforcement, Expert Witnesses • Those involved in Systems Administration • Systems Administrators, Network Administrators, Security Officers • Those writing procedures • Managers

  10. Computer Forensics • Computer Forensics presupposes skills in • Ethics • Law, especially rules of evidence • System and network administration • Digital data presentation • Number and character representation • Systems • OS, especially file systems. • Hardware, especially disk drives, memory systems, computer architecture, … • Networking • Network protocols, Intrusion detection, … • Information Systems Management

  11. COEN 252Prerequisites • Required: • Good moral character. Ability and willingness to respect ethical boundaries. • Familiarity with at least one type of operating system. (Windows, Unix/Linux, DOS experience preferred.) • Some programming. • Access to a computer with Hex editor. • Desired: • Familiarity with OS Theory. • Familiarity with Networking. • Some Knowledge of U.S. Legal System.

  12. COEN 252Text Books • SKOUDIS, E., Zeltser, L.: Malware: Fighting Malicious Code.. Prentice Hall Professional Technical Reference. 2004. • Second edition about to appear. • MANDIA, K., PROSISE, C., PEPE, M. Incident Response & Computer Forensics. 2nd edition. Osbourne-McGraw Hill, 2003.

  13. COEN 252Grading • Written Final (20%) (No collaboration.) • Practical Final (35%, due day of the final) (No collaboration.) • Ethics Case (5%, due day of the final) (No collaboration.) • Laboratories & Homeworks (30%) (Limited collaboration.) • Class Project (10%) Groups. This class is subject to the School of Engineering's Honor code. Disability Accommodation Policy: To request academic accommodations for a disability, students must contact Disability Resources located in the Drahmann Center in Benson, Room 214 (Tel.: 554-4111, TTY 554-5445). Students must provide documentation of a disability to Disability Resources prior to receiving accommodations. You should take the PERL courses offered by the Sun Academic Alliance. You can find instructions at ~tschwarz/ Homepage/ SunAcademicAllianceInstructions.html