Digital/Multimedia Scientific Area Committee

HIGHLIGHTS

Richard W. Vorder Bruegge

September 30, 2020
2

DMSAC Subcommittees

Video/Imaging Technology & Analysis

Speaker Recognition

Facial Identification

Digital Evidence
3

DMSAC

Richard Vorder Bruegge, Chair, U.S. Federal Bureau of 

Investigation

William Trenkle, Vice Chair, U.S. Department of Agriculture

Julie Carnes, Chair, Video/Imaging Technology and Analysis, 

Target Corporation

Lora Sims, Chair, Facial Identification, Ideal Innovations Inc.

David Marks, Chair, Speaker Recognition, U.S. Federal 

Bureau of Investigation

Lam Nguyen, Chair, Digital Evidence, U.S. Department of 

Defense, Cyber Crime Center
4

DMSAC Highlights in FY20

6 DMSAC Standards on the Registry

(Facial Identification, 3, Digital Evidence, 3)

DMSAC Source Conclusions Draft

Guidance on Non-routine Offsite Forensic 

Examination of Digital/Multimedia Evidence
5

DMSAC Highlights in FY20

Standards on the Registry
6

DMSAC Highlights in FY20

Standards on the Registry
Standards 

on the 

Registry

7
8

Standards 

on the 

Registry
Standards 

on the 

Registry

9
10

Standards 

on the 

Registry
11

Standards 

on the 

Registry
12

Standards 

on the 

Registry
13

DMSAC Source ‘Conclusions’ (Draft)

Targeted as an ASTM Standard Guide

Defines categories of results/opinions that 

shall be reached by a practitioner performing 

comparisons of people, objects, or scenes 

depicted in images.

“Support for” language...
14
15

§ Ability to Forensically Duplicate Digital/Multimedia 

Evidence makes remote processing possible –

working copy = original.

§ Must maintain integrity and confidentiality of data.

§ Encryption & Remote Desktop Services enable secure 

transport and processing of evidence.

Guidance on Non-routine Offsite Forensic 

Examination of Digital/Multimedia Evidence
16

Offsite Forensic Examination of Digital/

Multimedia Evidence – Risk Mitigation

§ Security – Physical Access, Network Access, Devices...

NIST Special Publication 800-46rv (2016). Guide to 

Enterprise Telework, Remote Access, and Bring Your Own 

Device (BYOD) Security

§ Testing Tools and Techniques (e.g., latency issues?)

§ Environmental Conditions (e.g., privacy, standard 

workstations, acoustics, lighting...)
17

Offsite Forensic Examination of Digital/

Multimedia Evidence – Workstation Options

§ Remote Workstation

§ vs.

§ Offline standalone processing (portable drives)

§ vs.

§ Cloud Computing

NIST Special Publication 800-144 (2011). Guidelines on 

Security and Privacy in Public Cloud Computing

NIST Special Publication 500-299 (DRAFT). Cloud Computing 

Security Reference Architecture
18

Offsite Forensic Examination of Digital/

Multimedia Evidence – Other factors

§ Secure File Transfer Protocol – Mitigates unstable connections

§ Well-being of onsite staff remains paramount

§ Must consider local legal requirements for evidence (can it even 

be handled offsite?)

§ Software licenses - does network license extend offsite? 

§ Quality Manuals should reflect potential for offsite work.
19

DMSAC Subcommittee Highlights

Video/Imaging Technology & Analysis

Speaker Recognition

Facial Identification

Digital Evidence
20

Speaker Recognition Subcommittee 

Key Progress/Plans

§ Audio Collection at a Temporary Location 

(Standard) 

Submitted to Audio Engineering Society 

SC-03-12 standards group (reconstituted)

§ Foundational scientific literature for 

human-supervised-automatic approaches 

to FSR (TechPub)

Responding to FSSB Comments
21

Speaker Recognition Subcommittee 

Key Progress/Plans

§ Issues in Data Processing and Relevant 

Population Selection (Tech Pub) 

(In progress)

§ Taxonomy of Mismatch Conditions for 

Forensic Speaker Recognition 

(In progress)

§ Process Map of Recommended Practices in 

Forensic Speaker Recognition

(In progress)
22

DMSAC Subcommittee Highlights

Video/Imaging Technology & Analysis

Speaker Recognition

Facial Identification

Digital Evidence
23

Video/Imaging Technology & Analysis 

Subcommittee - Key Progress/Plans

§ Lead on Offsite Forensic Examination doc

§ Key Participation in Source Conclusions doc

§ Standard Guide for Developing Disciplines 

Specific Methodology for ACE-V 

(Submitted to ASTM)
24

Video/Imaging Technology & Analysis 

Subcommittee - Key Progress/Plans

§ Standard Guide for Forensic Photogrammetry

§ Standard Guide for Image Authentication

§ Standard Guide for Forensic Digital Video 

Analysis

(All Balloted at SAC to Move to ASTM)
25

Video/Imaging Technology & Analysis 

Subcommittee – Submit to Registry in FY21

§ Standard Practice for Data Retrieval from 

Digital CCTV System 

§ Standard Guide for Crime Scene 

Photography

(All Currently at ASTM)

§ Standard Guide for Training Guidelines for 

Video Analysis, Image Analysis and 

Photography
26

DMSAC Subcommittee Highlights

Video/Imaging Technology & Analysis

Speaker Recognition

Facial Identification

Digital Evidence
27

Digital Evidence Subcommittee Progress/Plans

§ 3 Standards Placed on Registry

§ 2 ASTM Standards considered for revision/ 

updating (Mobile Device Forensics & Error Mitigation)

§ DME Accreditation Task Group formed to 

create framework of standards and quality 

management practices.

Will engage practitioners and end users. 
28

Digital Evidence Subcommittee Progress/Plans

Key Documents for 2021

§ Best Practices for Mobile Device Evidence Collection, 

Preservation, Handling, and Acquisition

§ Minimum Requirements for Testing Tools used in 

Digital and Multimedia Forensics

§ Best Practices for Archiving Digital & Multimedia 

Evidence

§ Best Practices for Mobile Device Analysis

§ Technical Note on Internet of Things (IoT) Devices 
29

DMSAC Subcommittee Highlights

Video/Imaging Technology & Analysis

Speaker Recognition

Facial Identification

Digital Evidence
30

Facial Identification Subcommittee Progress

§ 3 Standards on Registry

§ Sent to ASTM – Standard Guide for Role 

Based Training in Facial Comparison

§ Physical Stability of Facial Features of 

Adults – in OSAC 2.0 STRP Pilot 

§ At SAC ballot: “Image Processing to 

Improve Facial Recognition Searches”
31

Facial Identification Subcommittee 

Progress/Plans

Standards being prepared for immediate 

processing in OSAC 2.0 as STRP or non-STRP:

§ Standard Guide for Facial Comparison 

Overview and Methodology

§ Guide for Facial Comparison Training of 

Examiners 

§ Guide for Facial Comparison Training of 

Reviewers

§ Guide for Facial Comparison Training of 

Assessors
32

DMSAC Q&A?