Interview Techniques for a Mobile Crime World
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Digital forensic investigators must increasingly wear more than one hat in an investigation, from seizure to examination to interviewing the victim or suspect. Whether you are an experienced investigator who has been trained in interview techniques, or a forensic examiner being asked to pull double duty as an interviewer, this class will give you the framework of skills you need to handle interviews specifically related to evidence you find on digital devices. We will discuss verbal communications in general and also discuss tried and true methodologies to enhance the chances of a confession.
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Interview Techniques for a Mobile Crime World
- 1. Interview Techniques for a Mobile Crime World Research, Strategy & Execution 1
- 3. Goals and Objectives Goal Increase awareness of the ability to aid an investigation by the interview process and techniques Objectives • Understanding what communication is • To create a list of possible questions that may be asked • To understand the application of interview and deception techniques
- 5. Definition of Communication 5 • Derives from the Latin word “communicare” meaning to share. i.e • Speech • Visuals • Signals • Writing • Behavior • May be intentional or unintentional
- 6. Types of Interview 6 • Adult who is the suspect or person of interest • Adult who could be a witness • Adult who is the victim • Young person who is the suspect or person of interest • Young person who could be a witness • Young person who is the victim
- 7. Scenario 1 7 • You are at a raid scene that involves a male person that has been communicating sexually with a 13 year old girl using applications known as SnapChat and TigerText. There are several males that reside at this house in question. • You have been chosen as the person that will seize the mobile device and interview the only person that is presently in the house.
- 8. Pre Interview Considerations 8 • WHO. You are interviewing • WHAT. Prioritize your questions • WHEN. Pick the right time for this interview • WHERE. Pick the best surroundings for the Interview • WHY. Is this information required now? • HOW. Will you approach to this interview and can this interview be recorded?
- 9. Questions That Can Be Asked 9 • Based on the scenario we will collectively create a list of questions that could be of value in this investigation.
- 10. Some Potential Questions 1 • Whose phone is this? • Does anyone else use this phone? • Who owns this phone? • What make is this phone? • What is the phone number? • Who is the carrier? • Is the device Jailbroken or Rooted • If this is your device what apps are on it? • Does the device have a passcode? • Would you be willing to share the passcode?
- 11. Listen and Observe Closely 1 • If we cannot get the lips moving we cannot listen • Interrupting is a cardinal sin when interviewing • Listening is difficult for Law Enforcement • It takes training and discipline to listen • If you have asked a question WAIT for an answer • Gentle prodding maybe required “Well”?
- 12. Coming Full Circle 1 • Armed with the “in field interview” information obtained • We can now contextualize the data retrieved from the device extraction and vice versa • This will allow us to compare interview and data found
- 13. Left Side of the Brain Test 1 • In 30 seconds, draw all of the following • A cup • A hand • A house
- 14. Let’s Compare 1 The left side of the brain already knows how to draw these things and does not need the right side to tell it what to do
- 15. Getting to the Right Side of the Brain 1 The Brain Viewed From the Top
- 16. Getting to the Right Side 1 • Draw that same cup upside down • Was it the same? • Was it as easy to draw?
- 17. Why Do we Need the Right Side? 1 Volunteer • Extremely difficult to lie backwards • If the story is truthful more details may emerge
- 18. Other Clues of Deception 1 Eyes of Person Facing You This may be highly subtle to observe and not always accurate Visually constructed Visually remembered Auditory Constructed Auditory remembered Feeling smell taste Internal Dialog
- 19. Micro Expressions 1 • Brief • Involuntary • Frown • Eyes glaring • Narrowing of the lips Note: Audio Visual Recording is valuable with this type of deception
- 20. Resources 2 • Drawing From the Right side of the Brain, Betty Edwards • The Power of Body Language, Tonya Reiman • The Definitive book of Body Language, Allan Pease • The Reid Technique, www.Reid.com