Electronic Discovery Services
Full-lifecycle ESI collection, processing, and production for litigation. Trusted by the SEC, NASA, the City of New York, and hundreds of law firms for more than three decades.
Full-Service eDiscovery
GDF has been active in eDiscovery collection, forensic analysis of data, and providing expert technology witness testimony since the infancy of the internet. We work hundreds of cases annually and are an acknowledged leader in the field. For matters requiring forensic device analysis, our computer forensics team works alongside eDiscovery collections.
Our eDiscovery team combines deep legal knowledge with forensic expertise, ensuring that all Electronically Stored Information (ESI) is collected, processed, and produced in a manner that is defensible, admissible, and fully compliant with applicable rules and court orders.
eDiscovery Service Catalog
- eDiscovery strategy, planning, and readiness assessment
- ESI identification and data mapping
- Remote and on-site collection from all platforms
- Mobile device collections (iOS, Android)
- Cloud platform collection (Microsoft 365, Google Workspace, Slack, Salesforce)
- Complex and hostile environment collections
- Forensic disk imaging and chain-of-custody documentation
- Early case assessment (ECA) services
- Data deduplication, culling, and processing
- Data conversion to any production format
- Secure data warehousing and long-term storage
- Expert affidavits and court-ordered productions
- Ex-parte and court-ordered collections
- Collection defense and challenge support
- Litigation hold implementation and management
Notable Clients
GDF has provided eDiscovery services to some of the most demanding clients in the United States:
- U.S. Securities & Exchange Commission
- NASA
- The City of New York
- AES Energy / PSE&G
- Senior Aerospace
- Stony Brook University Hospital
- NY State Department of Corrections
- American Civil Liberties Union
- American Stock Exchange
- MedStar Health
- Hundreds of Am Law 100 and regional law firms
eDiscovery Readiness
The best time to prepare for eDiscovery is before litigation arises. GDF's forensic readiness assessments help organizations build defensible ESI policies, map their data sources and storage locations, and establish standard operating procedures that minimize costs and exposure when a discovery request arrives. Organizations facing active breaches should review our breach response services.
Our readiness services include thorough analysis of current ESI procedures, policy and plan review, data store identification, standard operating procedure development, archiving and preservation strategy, and training for internal IT and legal resources.
Our eDiscovery Process
When a matter arises, GDF responds immediately. We identify the right team (forensic, eDiscovery, or both) and deploy remotely or on-site as the situation requires. Our globally positioned network of responders can be on-site at most U.S. locations within hours.
Last updated: April 14, 2026
Identification & Preservation
We work with your legal team to identify custodians, locate all relevant ESI, and implement legally defensible litigation holds that protect against spoliation claims.
Collection & Processing
Forensically sound collection from any source: desktops, servers, cloud platforms, mobile devices, and backup media, with full metadata preservation and documented chain of custody.
Review & Production
We prepare data sets for review in all major platforms, provide ECA services to focus review efforts, and produce documents in any required format: TIFF, native, PDF, or custom.
Expert Support
Our experts provide declarations, affidavits, deposition testimony, and trial testimony on all aspects of the eDiscovery process, from collection methodology to production completeness.
Discuss Your eDiscovery Needs
All matters discussed are strictly confidential. Contact us for a free consultation about your eDiscovery needs.