1. Interview Techniques for a Mobile Crime World Research, Strategy & Execution 1

2. 2 Keith Daniels Senior Trainer Cellebrite Keith.Daniels@Cellebrite.com 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 4. Understanding a Communication 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. Lets 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