Trusted by Lawyers, NGOs and Law Enforcement Worldwide
GLOBAL CYBERCRIME
INVESTIGATORS.
COURT-READY RESULTS.
For companies, executives and attorneys. We identify anonymous attackers, trace fraud and deliver evidence that holds up in court.
SPEAK WITH AN INVESTIGATORAs featured on
Your Plan B Justice Solution, When Law Enforcement Can’t Help.
Rexxfield investigates complex cybercrime cases. We are here to help you get justice.
We identify anonymous offenders, trace stolen digital assets, and support law enforcement and civil law teams with evidence that holds up in court.
Since 2008, we’ve worked with victims, corporations, law firms, and law enforcement worldwide to deliver fast, discreet, and proven outcomes in complex online cases.
Our services
We Investigate a Broad Range of Cybercrime Cases
View all cyber investigation services
Private Investigations
Identify anonymous accounts
We trace anonymous accounts, posts and messages back to the people behind them, even behind a VPN when there is a suspect.
Online defamation and harassment
We find who is behind false reviews, accusations and harassment campaigns, and preserve the evidence for your attorney.
Executive and celebrity threats
Impersonation, extortion and coordinated harassment aimed at executives and public figures. We find who is behind it.
Corporate Investigations
Wire fraud and financial crime
We trace the money and the people who took it, and work with banks on wire fraud cases.
Business email compromise
We investigate compromised mailboxes, spoofed domains and fraudulent payment requests, and trace where the money went.
Background investigations
Verify the identity, history and digital footprint of hires, partners and investors. Packages from USD 2,000.
Litigation Support
Whether the case is private or corporate, your attorney needs evidence a court will accept. We prepare it, and we testify to it.
Learn about litigation support
How Rexxfield Empowers Law Enforcement and Legal Teams Worldwide
We deliver actionable intelligence, uncovering hidden evidence, and driving results in high-stakes cybercrime cases.
Contact our investigatorsCredibility Validated by Global Law Enforcement.

“We relied heavily on the Rexxfield report in writing up our justification for why we wanted to open this case.”
FBI field agent**

“After reviewing your team’s findings, I can confirm that they align with the results of my own investigation. Your analysis reinforces the direction of our ongoing work.”
Task Force Officer, U.S. Secret Service Cyber Fraud Task Force

Worked with the U.S. Marshals and the Maryland State Police.
** The FBI does not officially endorse Rexxfield. Rexxfield is a source, not a law enforcement agency. This feedback comes from an individual FBI field agent and does not necessarily represent the views of the FBI more broadly.
Transparent Fees.
Trusted Outcomes.
Every case is unique, so we list only minimum fees as a guide. After reviewing your case form, we’ll provide a tailored quote. Law enforcement agencies are supported free of charge as part of our commitment to public safety.
Digital Investigations
These cases typically involve identifying anonymous offenders and gathering legally admissible evidence.
USD
5,000
Minimum fee
CONTACT USCorporate Investigations
Complex investigations involving internal threats, data breaches, or cyber fraud within organizations.
USD
10,000
Minimum fee
CONTACT USFinancial Crime and Scams
Due to the complexity and global scope of these cases, pricing is determined on a case-by-case basis following an initial consultation.
Custom quotes ensure tailored investigative strategies and resource allocation.
We do not serve the gambling or sex industries, or other objectionable businesses.
Our team
The People Behind Rexxfield
Rexxfield is powered by a team of cybersecurity and intelligence experts working to detect threats, investigate breaches, and protect against cybercrime.

Stephen Dougherty
Chief Operating Officer
Stephen Dougherty is a cybercrime and wire-fraud investigator with over 15 years of experience in financial-crime, digital-forensics, and international cyber investigations. A former U.S. Secret Service investigator, he helped pioneer the Global Investigative Operations Center and the BEC Mission Desk, recovering millions in victim funds. A decorated expert and global speaker, he shares insights on cyber-enabled fraud, asset recovery, and public-private collaboration.
Full bio
Ronnie Tokazowski
Chief Technology Officer & Managing Member
As a cybersecurity researcher and Chief Fraud Fighter with over 15 years of experience, Ronnie specializes in threat intelligence, scam analysis, and fraud prevention. He combines deep technical insight with a strong commitment to victim advocacy, to expose and disrupt threats like BEC, romance scams, and crypto fraud while fostering collaboration between law enforcement, industry, and victims to reduce harm.
Full bio
Anna Hulst
Licensed Private Investigator & Managing Member
As a licensed cyber investigator, Anna specializes in social engineering and open-source intelligence (OSINT), skilled at uncovering the real identities behind online crimes through pretext-based engagements and digital forensics. She works closely with law enforcement and legal teams to build clear, evidence-driven cases—transforming complex data into visuals that reveal truth, accountability, and justice.
Full bioReal Stories. Real Impact.
From anonymous harassment to courtroom victories, Rexxfield has helped victims, families, lawyers, and businesses get answers – and justice.
Within only a couple of days, Rexxfield discovered the identity of the cowardly “anonymous” owner of a website, which he created to discredit and defame me. I was then able to file a lawsuit against him.
– Stephanie K.
The police did not know what to do about my stalker. For 7-months I had no help, or hope of a rescue. Michael from Rexxfield ID’d the stalker within 2 days. He wrote a report and step by step instructions for the police to follow for prosecution. I now have a restraining order..
– Anonymous
Michael is reliable, trustworthy, and delivers what he promises. I’m very glad to have Michael on my side.
– Franky
Rexxfield is the most qualified company for any business or individual in need for reputation management services, search engine optimization or forensic investigation services. The people in Rexxfield’s team are not just the best, in terms of talent, but they also genuinely care about their clients. Most people (and businesses) who’ve been defamed, harassed and/or stalked online, or are a victim of online identity theft, feel victimized and alone. The professionals at Rexxfield provide victims with a sense of empowerment. They are available 24-hours a day. There is NO other firm that I’d recommend or use myself for SEO or reputation management, other than Rexxfield.
– Fozia
I have worked with Rexxfield on multiple occasions regarding a variety of cyber-investigative matters. Rexxfield has always proved to be extremely knowledgeable, resourceful, innovative, quick-acting, and results-driven. I continue to turn to Rexxfield first for my cyber-investigative needs, and I have referred Rexxfield to many others.
– Jeffrey Rosenfeld (Internet Attorney)
I hired Rexxfield after receiving hundreds of harassing and cruel anonymous text messages for 18 months. The police were unable to help me; I felt afraid and desperate for help. Rexxfield identified who my harasser/cyber-stalker was: it was my husband. Along with Rexxfield’s investigation evidence, they assisted me with gathering additional legal evidence pertaining to their investigation, during my 18-month long divorce litigation, to create an even stronger case. During my litigation I fought for primary custody of my children, and was granted primary custody, of which Rexxfield’s evidence of my husband being the anonymous texter was a huge factor in the judge’s custody decision.
I searched through several private investigators before deciding on Rexxfield, as I have learned that very few PIs can actually do this type of investigation. Considering all Rexxfield provides, their prices are extremely reasonable and they genuinely care about your case. Along with their ability to obtain conclusive evidence, Michael, owner of Rexxfield, is an excellent testifier and has top-notch credentials. My attorney was pleased.
I don’t know what my children and I would have done without Rexxfield’s help.
– Susan S.
I asked for help from Rexxfield after local law enforcement and prosecutors refused to investigate the social media used by an individual who had been threatening my family and me . Rexxfield completed their investigation swiftly and discreetly. They maintained regular contact with us and were always available and interested in helping us. Frankly, they gave a d*mn, and my wife and I needed that. Rexfield’s findings made me realize that we were in more danger of firearms violence from this individual than I had even imagined. The information they compiled is now an important part of the criminal and civil suits soon to take place. I will always be grateful for the assistance Rexxfiled provided.
– David R.
Not only has Rexxfield helped repair the damage done to our reputation by unjust and spiteful individuals and competitors, but they have also been able to positively identify these anonymous and malicious critics.
– Corey Bates
Service is impeccable and swift, my issue was resolved very quickly and there is a feeling of caring in dealing with you, could not recommend them enough, thank you.
– Anonymous
I can’t say enough about Rexxfield and their ability to find the truth, find the bad actors and fight for you and or your business. The internet opens the doors for nefarious people. Rexxfield quickly solves the problems. My personal experience with the Rexxfield team, has been exceptional.
– BPWV Armored
Latest Cybercrime Cases
We have worked with the U.S. Marshals, FBI, USSS, DHS, numerous European, African and Asian cybercrime police agencies, Australian State and Federal police and many private security, and corporate intelligence organizations.
02/09/2022
ProtonMail Blackmailer Exposed
Case Study – how we exposed the identity of a ProtonMail blackmailer The Brief: For months, our client received extorting messages from fake email addresses and spoofed phone numbers. The
02/09/2022
ProtonMail Blackmailer Exposed
Case Study – how we exposed the identity of a ProtonMail blackmailer The Brief: For months, our client received extorting messages from fake email addresses and spoofed phone numbers. The Protonmail blackmailer antagonist also contacted her husband and family members with provocative pictures of her and threatened to expose more compromising information if she did

