Computer Forensics Experts

Technical Resource Center is a full-service Computer Forensics Investigations Crime Lab.
We assist attorneys, corporations, and individuals with computer evidence collection, investigations, data recovery, and Expert Witness Testimony. We have locations in Los Angeles California and Orlando Florida and provide services throughout the United States, including all of California.


Our team of dedicated specialists looks forward to assisting you with your Computer Forensics and Cell Phone Forensics Investigations, as well as your eDiscovery, Expert Witness, Evidence Preservation, and Data Recovery needs. We are experts in the following investigations and services (please hover over photo):

  • Computer Forensics Investigations - California

    Computer Forensics combines the fields of Computer Science and Law. Our experts preserve, analyze, and report on the digital evidence found on computer hard drives, USB devices (thumb drives and external hard drives), online data storage (i.e. Dropbox, Google Drive, and OneDrive), and online email services (i.e. Gmail and Yahoo email).

    Computer Forensics Investigations in California
  • Cell Phone Forensics Investigations - California

    Cell Phone or Mobile Device Forensics consists of the extraction, preservation, analysis, and reporting of data located on mobile devices in a forensically acceptable and court approved process. TRC can examine more than 9,500 different types of cell phones and tablets, including the most popular devices on the market, the Apple iPhone and iPad, and Android-powered smartphones.

    Cellphone and Mobile Device Forensics Investigations in California
  • eDiscovery - California

    The duty to preserve Electronically Stored Information (ESI) begins when litigation is reasonably anticipated. TRC has the unique advantage of having worked on behalf of both plaintiffs and defendants. We have served as a "Neutral Expert for the Court" on multiple Electronic Discovery cases. Ask about our distinctive process known as "Forensics eDiscovery."

    eDiscovery for Civil Litigation in California
  • Expert Witness Services

    Our Lab Director, Neil Broom, has been appointed to the Los Angeles Superior Court Panel of Expert Witnesses for Computer Forensics. Mr. Broom has been qualified as an Expert Witness multiple times in state and federal courts, in civil as well as criminal cases. Neil is also the co-author of the book "Computer Forensics Jumpstart" and has trained over 3,000 students in Computer Security and Forensics.

    Expert Witness for Court Testimony of Computer Forensics Investigations in California
  • Evidence Preservation -

    At times, simply preserving evidence for potential future litigation may be all that is necessary. TRC specializes in large collections (over 50 computers) but can assist with any size forensics preservation. Windows based computers, Apple Mac devices, and mobile devices (cell phones and tablets) can be collected, forensically preserved (including Chain of Custody), and returned to service quickly and professionally.

    Electronic Preservation for Civil Litigation Hold in California
  • Data Recovery - California

    Corrupted Operating System? Deleted photographs? Lost data? Our technicians can restore data from damaged computer hard drives, cell phones, and USB devices and get you back to work quickly. Data Recovery can be a cost effective method to restore damaged devices as opposed to recreating business data and sometimes it can be the only solution to recover the lost memories found in deleted photos.

    Data Recovery for Apple Mac PC Laptop and Desktop Computers in California

Frequently Asked Questions

If you have any questions, please do not hesitate to contact us.

Computer Forensics FAQs

What exactly is Computer Forensics?

Computer Forensics is the use of specialized techniques for the preservation, identification, extraction, authentication, examination, analysis, interpretation and documentation of digital information. Computer forensics comes into play when a case involves issues relating to the reconstruction of computer system usage, examination of residual data, authentication of data by technical analysis or explanation of technical features of data and computer usage. Computer Forensics requires specialized expertise that generally goes beyond normal data collection and preservation techniques available to end-users or system support personnel.

What is Chain of Custody/Chain of Evidence?

Chain of custody is the record of the custodial history of evidence. The Chain of Custody shows, "WHO had access to WHAT and WHEN did they have it."

Chain of Evidence or authentication is the record of the collection, processing, and analysis of digital evidence. It proves that the presented evidence is unequivocally derived from the acquired digital information.

What is a Forensics Image?

A forensics image (sometimes called a forensics copy) is an exact bit-by-bit copy of a digital device (hard drive, USB device, cell phone, etc.) including active data, slack space, unallocated space (or unused space). We use court approved forensics tools for making these images. Our tools produce authentication information, called a hash value, to ensure the integrity of the image.

What is a hash value?

A hash value is a mathematical algorithm produced against digital information (i.e. a file, a physical disk, or a forensics image) thereby creating a digital fingerprint for that information. It is by purpose a one-way algorithm and thus it is not possible to change digital evidence, without changing the corresponding hash values. In other words, if the hash value of a file has not changed, the file itself has not changed.

A hash value, commonly referred to as an MD5, SHA-1, or SHA-256 hash (based on the algorithm used to produce the hash) is used to authenticate digital evidence.

MD5 Hash Example: e6196e1b4f0d1535244eaab534428542

What is the difference between Computer Forensics and Digital Forensics?

Generally, the concepts overlap, however digital forensics may be the more contemporary expression and more inclusive, recognizing forensics services directed at more types of devices besides those that have been traditionally considered computers, such as cell phones, landline phones, cameras, sound recorders, personal digital assistants, networks including the Internet and others.

How much do computer forensics investigations typically cost?

The cost of a computer forensics investigation varies greatly, depending on the number and types of systems involved and the complexity of the evidence recovered. Technical Resource Center knows how to ask the right questions to obtain an accurate quote for your investigation.

A complete examination of a single Terabyte hard drive may have over 200,000,000 pages of electronic information and may take between 15 to 100 hours to examine, depending on the amount of data, types of data, condition of the media and data, and the questions to be answered.

A reasonable quote can be obtained prior to the start of the examination if complete and accurate information about the systems is available to the examiner and the scope of the examination is clear (i.e. the questions that need to be answered). This time could increase or decrease, depending upon the type of operating system used, the type of data contained within the system, and the size and amount of data in question.

At Technical Resource Center, our examiner's hourly rate is $350. In most instances, examination and reporting can be completed in less than 20 hours and the complete analysis usually totals less than $7,000 for a single hard drive.

We do NOT charge an hourly rate for equipment operation time (i.e. when our personnel are not actively involved processing evidence, but only periodically monitoring the processing). Some firms charge extra for the use of their computer hardware to process evidence.

Mobile Forensics FAQs

Certifications and licenses for Technical Resource Center

CCE - Certified Computer Examiner - International Society of Forensic Computer Examiners (ISFCE)
CISSP - Certified Information Systems Security Professional - International Information System Security Certification Consortium (ISC)²
CFE - Certified Fraud Examiner - Association of Certified Fraud Examiners (ACFE)
CHFI - Computer Hacking Forensic Investigator - EC Council
CEH - Certified Ethical Hacker - EC Council
EnCE - EnCase Certified Examiner - Guidance Software
ACE - AccessData Certified Examiner - AccessData Group
Certified ProDiscover Examiner Instructor - Technology Pathways
Certified XRY Physical Mobile Phone Examiner - MSAB

Licensed California Private Investigator #28170
Licensed Florida Private Investigation Agency #A1700255
Licensed Georgia Private Detective Agency #PDC002261
Licensed Michigan Professional Investigator Agency #3701207406
Licensed Texas Private Investigation Company #A06230801

Case Types

Technical Resource Center has over 25 years of experience working the following types of cases:

Personal Computer Forensics Investigations in California
personal cases
Business Computer Forensics Investigations in California
Business Cases
Criminal Defense Computer Forensics Investigations in California
Criminal Defense

We have the experience and knowledge to conduct an impartial review of the evidence in your case to assist the attorney in making critical legal decisions.


We are a full service Computer Forensics Investigative firm.

Neil Broom Expert Witness Testimony for Computer Forensics Investigations in California

Neil Broom
Computer Forensics Expert
Lab Director

Dr. Phil Show - 12.06.17
Neil Broom conducted a forensics examination of an iPhone for the Dr. Phil Show.
"This guy is the Best of the Best!"

Contact us

We look forward to hearing from you...

About Technical Resource Center

We are experts in Computer Forensics Investigations, Cell Phone Forensics, Data Recovery, eDiscovery, and Expert Witness Services.

We are licensed in California, Florida, Georgia, Michigan, and Texas:

  • CA Private Investigator #28170
  • FL Private Investigation Agency #A1700255
  • GA Private Detective Agency #PDC002261
  • MI Professional Investigator Agency #3701207406
  • TX Private Investigations Company #A06230801

Call or Email for a FREE Case Evaluation.

Mailing Address

  • Technical Resource Center, Inc.
                  20422 Beach Blvd. Suite #205
                  Huntington Beach CA 92648
  • 800-839-2088
  • info@trcglobal.com
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