Identify source devices and verify the authenticity of digital video files with Medex Forensics’ new patent-pending technology.
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Video Authentication and Source Classification
Medex is a patent-pending, new approach to examining video files that provides investigators and prosecutors new insight into digital video.
Our novel methodology helps answer questions about authenticity and file manipulation, as well as generational provenance, all from a singular video file.
Medex not only supports the analysis of cell phone, camcorder, or CCTV video, but can also examine video from a wide variety of cloud-based and streaming video services, such as YouTube, Facebook, or Instagram.
As a non-content video forensic tool, a Medex analysis is not affected by poor (or very good) video quality, making it a viable solution in examining all types of video from camera originals, to DVRs, to deepfakes.
Secure and User-friendly
With its intuitive, web-based interface, Medex is as simple as drag, drop, and discover.
Concerned about security? Medex is hosted on AWS GovCloud CJIS compliant infrastructure and does not retain or playback any submitted video files. Read Medex’s security pamphlet for more information about Medex’s SaaS security practices.
Medex Forensics is careful to ensure the integrity and authenticity of digital evidence processing to ensure our output can be trusted. We compute and store a forensic fingerprint of each evidence file we receive using an industry standard SHA hash function. We compute and validate this hash before and after upload to ensure no changes occurred during transmission to Medex.
Expert Customer Service
Don’t have a full-time forensic video/image analyst? No problem. Medex Forensics is happy to provide continuing case support and is ready not only to help interpret results but also to provide expert reports and testimony should the need arise. We offer these services all part of your Medex Basic or Medex Advanced annual license.
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Has this video been manipulated? Medex employs a series of proprietary testing algorithms to evaluate every file and report any potential manipulation or authenticity issues. Medex’s approach to evaluating manipulation is not tied to video content, but rather to a file’s internal structure; in other words, no matter how real the video looks, it can still be effectively evaluated.
Video Source and Generation Identification
Where did this video come from? How did it arrive on this device? Medex reveals the history of a video file’s lifespan. From the device that created it to how it arrived on your doorstep, Medex can identify the various devices, models, and software programs (including video editing tools) that the file passed through. Medex has been proven effective on video files from cell phones, camcorders, CCTV systems, and the cloud, only using a singular video file for analysis.
Individual Video Recovery
How do I obtain this singular video? Patrol officers and investigators are often tasked with obtaining a singular video of interest from a witness or victim’s cell phone. Do they take the phone for forensic analysis, depriving the owner of their phone for days, or do they have the victim/witness email the file directly to them, potentially opening an avenue to challenge authenticity? With Medex, singular files can be transmitted (email, DropBox, Google Drive, file sharing platform, etc.), evaluated for manipulation, and tied to a source model with specific attributes, thereby offering an alternative to forensically acquiring the entirety of a device when only a single video is sought.
Every Case Starts Off as a Research Project
What system recorded this file? Am I dealing with original evidence? Video analysts know that having information about the recording system and evidence files can be the key to success, although obtaining this information can be difficult if the video was retrieved by someone else. Medex will help to quickly answer these questions, allowing the analyst to gain insight into the files in front of them.
ICAC / CSAM investigations
Nonconsensual image sharing (revenge porn) investigations
Copy single (or multiple) cell phone video files without the need to acquire the entire device
Authenticating videos obtained from unknown sources (e.g., anonymous tips)
Downloading social media video
Identifying deepfake videos
Medex Forensics understands that complex digital video files can generate complex answers. We believe that effective training can allow investigators and forensic examiners to get the most accurate and useful results out of the Medex software application. Our training offerings are designed to provide a designated audience an accurate understanding of device source and generational classification/authentication concepts, as well as a competency for using Medex in a variety of practical and common scenarios.
Training (1 Day)
This course is aimed at front line officers and investigators who would benefit from detecting potential manipulated video with Medex as well as understanding the basics of identifying where a video came from. It starts with very introductory concepts, such as how digital video is recorded and stored, presented in a non-technical manner. We then build upon those concepts so the student will be prepared to fully and accurately understand a Medex Basic report based on their skill level. This course will not prepare the student to prepare an expert opinion on video authenticity, but then again that’s support that Medex Forensics can assist with as part of your annual software license.
Training (2 Days)
Sit down, strap in, and hold on as we go for a deep dive into the structure and format of digital video files and understanding their composition at a binary level using cutting edge processes and technology. Students should be skilled digital forensic examiners comfortable working with video files and/or in a hex editor. Aside from a strong understanding of video file construction, the course will prepare students to use Medex in complex authenticity or file origin cases and provide expert opinion testimony in court. Graduates will be eligible to test for and be recognized as a Certified Media Examiner (CME) upon passing.
Upcoming Classes: Coming soon!
As we prepare for the launch of Medex, we are busy preparing initial training sessions. With the current travel restrictions caused by the Covid-19 pandemic, we are holding off on announcing times and locations. As soon as we have more clarity on the practicalities of holding in-person training sessions, we will announce via our mailing list, and we will update this website, as well. Please sign up for our mailing list to get updates directly.
If you have interest in hosting one of the classes above, please use our contact form to let us know.
Brandon Epstein, CFVA, CFVE
Director of Forensic Training
Brandon started his law enforcement career in 2007 as a patrol officer with a municipal police agency. While serving as a major crimes detective in 2014, Brandon saw the power of video evidence in investigations and began to specialize in video forensics. Since then, he has performed hundreds of examinations involving thousands of hours of digital video and has been qualified as an expert witness over a dozen times in the past two years.
Brandon is a Certified Forensic Video Analyst (CFVA), Certified Forensic Video Examiner (CFVE) and holds a Master of Science degree in Recording Arts – Emphasis Media Forensics. He is active with many professional organizations, including the Scientific Working Group on Digital Evidence, the IAI Forensic Video Certification Board, the IACP Cybercrime and Digital Evidence committee, the American Academy of Forensic Science and the NIST/OSAC VIdeo/Image Technology and Analysis Subcommittee. He regularly provides digital forensic instruction to local, state, and federal law enforcement officers nationwide. Brandon lives in New Jersey with his wife and daughter.
Bertram Lyons, CA
Managing Director | Software
Bertram specializes in the acquisition, management, and preservation of digital content.
For fifteen years, Bertram worked as a digital archivist for extensive archives.
His recent clients include the Federal Bureau of Investigation, Smithsonian Institution, Paramount Pictures, Yale University, the Library of Congress, the International Olympic Committee, and Harvard Business School, among many others.
Bertram, as a contractor, currently develops software and training for FBI’s Forensic Audio Video and Image Analysis unit and has been serving in that capacity for more than three years — providing digital audio and video forensic analysis support through customized training (for digital audio and video examiners) and through customized software for the unit.
Bert also serves as a member of the SWGDE (Scientific Woking Group on Digital Evidence) Digital Video Working Group.
Bert is active with professional audiovisual and archival organizations including the International Association of Sound and Audiovisual Archives (Executive Board Member and Editor of IASA publications), the Society of American Archivists (Council Member), the Association of Recorded Sound Collections, and the Association of Moving Image Archivists. He has also received certification from the Academy of Certified Archivists and is a graduate of the Archives Leadership Institute. He holds an MA in museum studies with a focus in American studies and archival theory from the University of Kansas.
Senior Developer | Data Scientist
Dan has served as a Senior Developer for Portal Media since 2013. He works extensively with forensic file format analysis, most recently as AVP’s lead developer working on DPX MetaEdit and MXF MetaEdit (also known as embARC) for the Library of Congress/FADGI and a media analysis approach for the FBI Forensic Audio, Video, and Image Analysis Unit in Quantico, VA. He also has vast expertise in logistics and ecommerce algorithms, data warehouse development, and creative analytics. Prior to 2013, Dan served for 4 years as a Developer for the Wisconsin Department of Justice, and worked on the Wisconsin Justice Information Sharing project, connecting local law enforcement’s record management systems for use statewide. He holds a Masters of Computer Science from DePaul University, and both a Bachelor of Arts in Sociology with a concentration in analysis and research as well as a certificate in Criminal Justice from the University of Wisconsin-Madison.
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