Contact SDDF

  1. San Diego Digital Forensics, Inc.
    3944 Murphy Canyon Road, Suite C-207
    San Diego CA 92123


  2. Jim Sevel

    Jim Sevel, President, CFCE

    Jim Sevel is a retired Department of Homeland Security (DHS)/US Customs Service (USCS) Agent with thirty-two (32) years of federal law enforcement experience. He was one of the founding members of the San Diego Regional Computer Forensics Laboratory and retired in 2006 as the Supervisor of the DHS Computer Forensics and Cyber Investigations Group. He was rehired by DHS in 2008 to work and supervise computer forensic cases and retired again in 2013. Jim started San Diego Computer Forensics in 2007 to service the civil litigation community. On April 1st, 2014, Jim merged with Sargent Digital Forensics to form their new company San Diego Digital Forensics (SDDF). Jim has over 20 years of experience conducting computer forensic examinations and has testified in military, federal, and state courts as an expert on digital forensic issues.

  3. Don Evans

    Don Evans, CFCE

    Don Evans retired from the Department of Homeland Security (DHS), Homeland Security Investigations, as a Special Agent with over thirty-four (34) years of federal law enforcement experience. In 2006, he was selected for training and assigned to the computer forensic program under the DHS Computer Forensics Unit. Don is certified in computer and cell phone forensics. On April 1st of 2014, Don joined with Sargent Digital Forensics and San Diego Computer Forensics to form their new company San Diego Digital Forensics. Don has been conducting computer and cell phone forensic examinations since 2006.

  4. Don Evans

    Bob Petrachek

    Bob Petrachek has approximately 33 years of law enforcement experience at the local, state and federal level, including military liaison enforcement. Bob started working with digital evidence in 1988 and is a founding member of the San Diego Regional Computer Forensics Laboratory and the HTCIA San Diego chapter. After retiring from law enforcement, Bob became the Director of Training for BlackBag Technologies where he trained law enforcement professionals, intelligence analysts and military members both domestically and internationally. He continues to instruct and consult on Mac and iOS forensic principles and techniques to law enforcement, including the FBI, as a contract instructor for BlackBag and mentors BlackBag's MiCFE Certification program.

    Bob has extensive experience working with classified and privileged information. He has been sworn as a Special Master with State and Federal courts on several matters at the SDRCFL and holds an active Top Secret (TS/SCI Eligible) clearance.

    Bob has provided expert witness testimony on computer forensics, ammunition and firearms, traffic collisions, vehicle theft and identification and stamped number restoration. He is thrilled to continue enjoying his passion for digital evidence with his colleagues at San Diego Digital Forensics!