9796303 - Biometrics and Multimedia Forensics

The educational objectives of the Multimedia Forensics teaching are as follows:

1. Knowledge and understanding: the student will learn the knowledge of biometrics and digital forensics techniques, with particular attention to forensic phonetics and mobile forensics techniques.
2. Ability to apply knowledge and understanding: the knowledge of an applicative nature, acquired through the exercises and the laboratory, will concern the ability to use the main tools adopted in digital forensics; the student will acquire problem solving and teamwork skills.
3. Making judgments: teaching will stimulate autonomy of judgment and assessment of the conditions in which to apply digital forensics techniques and tools.
4. Communication skills: teaching is based on the use of a language specific to digital forensics studies which will become the basis of the communication activity set up by the student;
5. Learning skills: learning skills will be stimulated by critical knowledge of the topics covered in teaching made possible by attendance at lectures, laboratory activities and the study of reference texts.

The course includes 35 hours of frontal teaching and 15 hours of laboratory work. The teacher is also available for online reception meetings, by appointment.

If the teaching is given in a mixed or remote way, the necessary changes may be introduced as stated above, in order to comply with the program envisaged and reported in the syllabus.

1. Introduction to the course: The issues of digital forensics. Difference between multimedia and computer forensics. Legal aspects. Technical advice and expertise in criminal procedure. The professional figures of the CTU and CTP.
2. Biometric identification techniques: Introduction to biometric systems. Authentication. Morphological and behavioral biometric identifiers. Structure of a biometric system. Statistical methods. Verification and evaluation of system performance, usability and scalability. Multimodal biometric systems.
3. Audio and video forensics: Audio signal processing and compression. Voice coding standard. Forensic phonetics. Audio wiretapping. Audio signal enhancement techniques. Voice identification techniques: auditory, semi-automatic, automatic methods. Transcription of audio signal. Evaluation methods. Image and video signal processing. Main compression techniques and coding standards. Video forensics techniques. Laboratory: equipment, tools and applications.
4. Mobile forensics: Introduction to mobile forensics. Procedures and principles. Preservation. Acquisition. Inspection and analysis. Reporting. Main tools.
5. Geolocation through satellite services: Geolocation services and systems. Localization techniques. Localization systems. The GPS system. The satellites. Frequencies. Types of orbits. Classification of satellites. Azimuth and elevation. Coverage angle. Inclination of the orbits. Constellations of satellites. The GPS system. Intelsat. Satellite equipment and systems. Satellite services.
6. Laboratory: Main tools for forensic phonetics: PRAAT, Idem, Nuance Forensic.

1. Teacher's notes
2.  “Handbook of Digital Forensics of Multimedia Data and Devices”, Anthony T. S. Ho (Editor), Shujun Li (Editor), ISBN: 978-1-118-64050-0, 698 pages, September 2015, Wiley-IEEE Press
3. “Practical Mobile Forensics” di Satish Bommisetty, Rohit Tamma, July 2014