Podcast
Questions and Answers
What is a key measure to minimize accidental contamination during evidence handling?
What is a key measure to minimize accidental contamination during evidence handling?
- Using standard envelopes for evidence packaging
- Isolating bulk and trace evidence (correct)
- Storing evidence in open containers
- Assigning multiple people to handle evidence
Which of the following is essential for maintaining the integrity of evidence?
Which of the following is essential for maintaining the integrity of evidence?
- Keeping evidence in closed boxes until needed
- Mixing samples to verify testing
- Assiduous use of logging systems (correct)
- Omitting note-taking for efficiency
How can the accidental mislabeling of evidence be minimized?
How can the accidental mislabeling of evidence be minimized?
- Relying on verbal descriptions instead of written labels
- Incorporating specific SOPs designed for labeling (correct)
- Allowing anyone to label their own evidence
- Using disposable labeling materials
What is an effective way to prevent cross-contamination between samples?
What is an effective way to prevent cross-contamination between samples?
What role does contemporaneous note taking play in evidence handling?
What role does contemporaneous note taking play in evidence handling?
What role can a dedicated exhibits officer play in the evidence chain?
What role can a dedicated exhibits officer play in the evidence chain?
What is the primary objective of forensic science in the context of a criminal investigation?
What is the primary objective of forensic science in the context of a criminal investigation?
Which phase in evidence processing involves the examination and laboratory work on recovered evidence?
Which phase in evidence processing involves the examination and laboratory work on recovered evidence?
What is critical to maintaining the integrity of physical evidence collected from a crime scene?
What is critical to maintaining the integrity of physical evidence collected from a crime scene?
What does the term 'chain of custody' refer to in forensic investigations?
What does the term 'chain of custody' refer to in forensic investigations?
Which type of evidence may be collected during a forensic investigation at a crime scene?
Which type of evidence may be collected during a forensic investigation at a crime scene?
What is the first step in processing physical evidence from a crime scene?
What is the first step in processing physical evidence from a crime scene?
Which of the following processes ensures that forensic evidence is trustworthy and relevant to law enforcement?
Which of the following processes ensures that forensic evidence is trustworthy and relevant to law enforcement?
What is an essential consideration when packaging evidence from a crime scene?
What is an essential consideration when packaging evidence from a crime scene?
What is the primary responsibility of Scenes of Crime Officers (SOCOs)?
What is the primary responsibility of Scenes of Crime Officers (SOCOs)?
What is a critical aspect of maintaining evidence integrity?
What is a critical aspect of maintaining evidence integrity?
Which component is NOT necessary for ensuring continuity of evidence?
Which component is NOT necessary for ensuring continuity of evidence?
What does the term 'chain of custody' primarily ensure?
What does the term 'chain of custody' primarily ensure?
What procedure can help prevent evidence tampering?
What procedure can help prevent evidence tampering?
What must be done whenever evidence is handled to maintain its integrity?
What must be done whenever evidence is handled to maintain its integrity?
Why is it important to guard against evidence contamination?
Why is it important to guard against evidence contamination?
What procedure helps maintain security during evidence handling?
What procedure helps maintain security during evidence handling?
Flashcards
Chain of Custody
Chain of Custody
A system for tracking evidence from the time it's collected to when it's presented in court. It documents who had the evidence and when.
Anti-contamination SOPs
Anti-contamination SOPs
Specific procedures to prevent contamination of evidence, including isolation and protective equipment.
Evidence Integrity
Evidence Integrity
Maintaining the accuracy, reliability, and completeness of evidence.
Loss of Integrity (Deterioration)
Loss of Integrity (Deterioration)
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Mislabeling of Evidence
Mislabeling of Evidence
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Crime Scene Evidence Recovery
Crime Scene Evidence Recovery
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Evidence Tampering
Evidence Tampering
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Accidental Contamination
Accidental Contamination
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Evidence Mislabeling
Evidence Mislabeling
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Evidence Continuity
Evidence Continuity
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Inadmissible Evidence
Inadmissible Evidence
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Forensic Science
Forensic Science
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Forensic Science Scope
Forensic Science Scope
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Evidence Processing Stages
Evidence Processing Stages
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Evidence Recovery
Evidence Recovery
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Evidence Examination
Evidence Examination
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Evidence Interpretation
Evidence Interpretation
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Crime Scene
Crime Scene
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Forensic Science in Justice
Forensic Science in Justice
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Study Notes
DF347 Networks Forensics
- Course: DF347 Networks Forensics
- Semester: 1
- Academic Year: 2024/2025
- Dates: October 13th - 17th, 2024
- Instructor: Dr. Basil Elmasri
- Email: [email protected]
Computer Networks Layers
- TCP/IP protocol suite and OSI 7-layer model are presented.
- The TCP/IP model is a hybrid model combining the layers.
Encapsulation and Decapsulation
- Data is encapsulated with headers at each layer of the model.
- Headers are added at each layer (application, transport, network, data link, physical).
- Each layer adds its header to the data before sending it to the next layer.
- The process of unpacking the headers is known as decapsulation.
- The process of packaging the data with headers at each layer is called encapsulation.
Encapsulation and Decapsulation Example
- Server A sends a webpage to B.
- The webpage is broken into chunks.
- Headers are added to each chunk—HTTP, TCP, IP, MAC—along with a trailer.
- The frame is converted to bits (0s and 1s).
- The bits are sent through the network.
- PC B receives the bits and unpacks the headers (decapsulation).
- The webpage is assembled by removing the headers.
Forensic Science
- Forensic science is the application of science to the justice system.
- It aims to resolve both civil and criminal cases.
- Forensic science commonly involves criminal case investigations.
- It is used to associate people, places, and things to criminal activities.
- The discipline divides into distinct parts, like the definition itself.
Evidence Processing
- Crime scene investigation starts with evidence processing.
- Three phases are typically involved: recovery, examination, and interpretation.
- The recovery involves gathering evidence.
- Examination involves detailed analysis in a lab.
- Interpretation is the process of determining the meaning of the evidence found.
Recovery and Continuity of Evidence
- Integrity of evidence is crucial.
- Documentation of each evidence step is required.
- The chain of custody records who handled the evidence, when, and how.
- Records must track who handled the evidence, keeping track of contamination, deterioration, and mislabeling.
- Courts require a documented and uninterrupted chain of custody.
Loss of Integrity
- Includes tampering, accidental contamination, deterioration, and accidental mislabeling.
- Proper packaging and storage are crucial.
- Use of tamper-evident seals and secure evidence storage is important.
- Documentation needs to be preserved throughout the process.
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