Cyber investigations
Litigation Support for Attorneys: Digital Forensics, Subpoenas and Expert Testimony
We identify anonymous defendants, preserve perishable evidence, draft subpoenas for your signature and testify when the case needs an expert.
- Who we helpAttorneys, law firms and in-house counsel
- What you getCourt-ready evidence, subpoena drafts and expert testimony
- How we startFree, confidential consultation
- ExperienceWorking cybercrime cases since 2008
What can a cyber investigator do for a lawsuit?
We find the evidence a case depends on and present it so a court can use it. That includes identifying anonymous defendants, preserving logs and content before they are deleted, drafting precise subpoenas for your attorney to issue, and providing expert testimony for plaintiffs or defendants.
Rexxfield is not a law firm. These services are available only to or through licensed attorneys. If you are representing yourself, retain an attorney as an intermediary.
What we do
Digital forensics and litigation support services
The investigative and technical work behind online defamation, harassment, fraud and other cyber cases.
Subpoenas and electronic discovery
Detailed subpoena addendums with a plain-language description of the records and the justification, written so providers cannot claim ambiguity.
Preserving perishable evidence
We secure logs and content early, before provider retention periods and edits destroy them.
Anonymous (Doe) defendants
We identify unknown defendants through investigation and precisely worded subpoenas and orders.
Digital forensic analysis
Forensic work by Certified Digital Forensics Examiners that supports injunctive relief for plaintiffs or a strong defense.
Pleading and response support
Plain-language technical explanations for complaints, responses and motions to quash, specific enough that the provider has no room to push back.
Expert witnesses
Testimony for plaintiffs and defendants, and qualified experts for appointment as neutral special masters.
Why attorneys use us
Get the evidence right the first time
- Precise subpoenas. Plain-language descriptions with technical specifics leave providers no room to withhold records.
- Faster identification. Identifying defendants out of court can save weeks or months of provider delays.
- Evidence that holds up. Forensic capture and a documented chain of custody.
- Lawful methods only. We do not hack accounts or devices. Evidence gained that way would harm your case.
Who we work with
Support for both sides of the case
Plaintiff attorneys
Identify anonymous defendants and build the evidence for defamation, harassment and fraud claims.
Defense counsel
Technical support for responses, motions to quash and forensic review of the other side’s evidence.
Corporate and in-house counsel
Investigation and evidence support for smear campaigns, insider leaks and cyber incidents.
Law firms handling cybercrime matters
Forensic and investigative capacity you do not have to build in-house.
Related: Online defamation · Identify anonymous accounts · Executive and celebrity threats
Common questions
Litigation support FAQ
Can an individual hire Rexxfield without an attorney?
Rexxfield is not a law firm and has no attorneys on staff, and our litigation support services are available only to or through licensed attorneys and law firms. If you are representing yourself, retain an attorney to act as the intermediary and take delivery of our work. We can discuss your case, but we cannot give legal advice.
Do you issue subpoenas?
No. Your attorney issues them. We can ghostwrite subpoena addendums with a plain-language description of the records requested and the justification for them, so the provider cannot claim the request is unclear.
How do you identify anonymous (Doe) defendants?
We combine investigative techniques with carefully worded subpoenas and orders. In many cases we can identify the person outside of court first, which can save weeks or months of delay waiting for providers to respond.
Why does early evidence preservation matter?
Many internet providers delete their IP address logs within about six months, and online content can be edited or removed at any time. Evidence that is not preserved early is often lost.
Can Rexxfield provide expert testimony?
Yes, for plaintiffs and for defendants. Our team includes Certified Digital Forensics Examiners and computer forensics and electronic discovery experts. We can also provide qualified experts for consideration as neutral special masters on technical issues.
Do you work with defense counsel?
Yes. Defendants need the same precision for responses and motions to quash. We prepare plain-language technical explanations for filings and provide forensic review and testimony.
Building a case? Speak with an investigator.
The consultation is free and confidential.
Contact Our TeamLast updated: October 19, 2026. Rexxfield is a cyber-investigations firm, not a law firm. This page is general information, not legal advice.