Since 2003, Mr. Roloff has provided analysis and consulting services in digital forensics, electronic discovery, cell site location information (CSLI), and other technologies and electronic datasets that intersect with legal matters. These services are provided to all branches of the armed forces, state and federal public defenders, companies of all sizes, human resource departments, educational institutions, private investigators, law firms of all sizes, forensic accountants, and private individuals.

Analysis and consulting services include, but are not limited to: digital forensic examinations, discovery review, trial/hearing consultation, case strategy consultation, and expert testimony on legal issues relating to digital evidence and technology.

Mr. Roloff has analyzed electronic evidence and consulted on over fifteen hundred cases, provided consultation services in over 250 trials and hearings, and testified as an expert in digital, mobile, and computer forensics over 80 times.

These cases have included the investigation of electronic evidence in allegations of homicide, kidnapping, election fraud, wire fraud, Medicaid/Medicare fraud, sexual assault, solicitation of minors, sexual exploitation, unauthorized access (hacking), threats against the President, his family and staff, unauthorized systems use, internal investigations, theft of proprietary information, sex trafficking, espionage/terrorism and drug trafficking to name just a few.

Mr. Roloff frequently lectures on the topic of digital forensics and how it can be applied in the legal system. He has been recognized as a digital forensics, computer forensics and mobile forensics expert witness in United States district courts, United States military courts and many state courts throughout the country.

Joshua Michel is a Sr. Forensic Examiner for Roloff Digital Forensics (RDF) and has been working specifically in the field of digital forensics since 2013. He is an enrolled member of the Confederated Salish and Kootenai Tribes of the Flathead Reservation in northwest Montana and he has a personal interest in tribal governments, tribal sovereignty, and tribal policy.

Mr. Michel has over 16 years of experience working in various facets of Information Technology (IT) and Network Security with a specific focus on the credit card industry and e-commerce. During this time he has worked with software developers, system administrators, and content creators to diagnose complex problems and create sustainable solutions. Mr.  Michel is certified by Guidance Software as an EnCase Certified Examiner (EnCE) and Cellebrite as a Cellebrite Certified Logical Operator.

Mr. Michel has also owned, operated and managed his photography brand for the past 10 years, J.Michel Photography, which is primarily focused on portraiture, event and product photography. His experience in this area has led him to specialize in the analysis of digital images and film as well as the advanced software processing and manipulation of such electronic file formats.

Mr. Michel lectures on the topics of mobile device forensics, general digital forensics, their sub-topics, and how this field can be applied to the legal system. He has been recognized as a digital forensic, computer forensic, cellular tower analysis, and digital photography expert witness in United States Military Court and state courts throughout the country.

Art Hively joined the U.S. Army shortly after graduating from high school in 1973. After four years serving the country, he continued that service in the California Army National Guard for an additional ten years. The last six years of his military career he spent in the U.S. Army Reserve, retiring in 1996 with the rank of major. In 1981 he was hired by the Santa Clara County Sheriff’s Office as a deputy sheriff. He spent almost 25 years with that organization retiring in 2005 with the rank of sergeant. Between 1996 and his retirement he contributed to the organization in the area of high technology. Initially assisting the organization in moving from a paper report writing system to a digital report writing system. He learned computer programming to assist in this endeavor. During this time, he also wrote numerous computer programs for different divisions in the organization. The last year with the Sheriff’s Office he was assigned to the local high technology crimes task force in San Jose. The REACT task force is one of the five sister high technology crimes task forces in the State of California. During this year he began his training in computer forensics. In 2006, Art continued his service in the law enforcement community by joining the Ceres Police Department (Central Valley of California). From the start, due to his experience with high technology crimes investigations and computer forensics, he became the organization’s representative member in the Sacramento Hi-Tech Crimes Task Force. His duties with the police department over the twelve years there ranged from patrol officer, high school resource officer and detective. As a detective, besides being the organization’s high-tech detective, he also was responsible for crimes against children (physical and sexual abuse), adult sexual assaults, and major crimes against persons (assault with a deadly weapon, homicide, etc.). Between 2010 and his retirement in 2018 he led or participated in approximately 100 investigations involving the aforementioned case types. A number of these investigations were prosecuted in the U.S. District Court in Fresno, Eastern District of California. Since 2005, Art has participated in more than 1,000 hours of training in topics related to high technology crimes investigations, with a focus on digital forensics. He has earned the following certifications in the area of digital forensics:

• Guidance Software’s EnCase Certified Examiner (EnCE) – December 2011
• AccessData’s Certified Examiner (ACE) – February 2012
• Cellebrite Certified Mobile Examiner (CCME) – July 2015
• Cellebrite Certified Physical Examiner (CCPA) – July 2015
• Cellebrite Certified Logical Operator (CCO/CCLO) – July 2015
• International Society of Forensic Computer Examiners Certified Computer Examiner (CCE) - 2019

Art has been married to his wife for more than 40 years and they have two adult children and four grandchildren. They live in Copperopolis, CA.

Eric Hernandez is a Forensic Examiner for Roloff Digital Forensics (RDF) and joined the company in 2018. Mr. Hernandez has over 20 years of experience working in various facets of Information Technology (IT) and Network Security with a specific focus on the credit card industry and e-commerce. During this time, he has worked with software developers, system administrators, and content creators to diagnose complex problems and create sustainable solutions. Mr. Hernandez has received in depth training from Roloff Digital Forensics by a team with over 20 years combined experience in the field of digital forensics.

Mr. Hernandez provides analysis and consulting services in digital forensics and electronic discovery pertaining to evidence derived from electronic devices and storage mediums. These services are provided to all branches of the armed forces, state and federal public defenders, companies of all sizes, and private individuals.

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