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Trusted by Lawyers, NGOs and Law Enforcement Worldwide

GLOBAL CYBERCRIME
INVESTIGATORS.
COURT-READY RESULTS.

Rexxfield solves cybercrime cases others cannot.

SPEAK WITH AN INVESTIGATOR

As featured on

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Investigation Resolution Statistics*

less than

2%

Cases Investigated by Government

less than

0.05%

Cases Solved by Government

+70%

Of Investigated Cases Solved by Rexxfield

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.

VIEW CASE STUDIES
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Our services

We Investigate a Broad Range of Cybercrime Cases

Private Investigations

Identify anonymous internet users

From harassment and impersonation to defamation, we identify those responsible and gather evidence for legal or law enforcement action. We trace trolls through anonymous phone numbers, email addresses, social media, websites, etc.

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Scam Investigations

We investigate and trace online scams involving financial fraud, romance deception, and stolen digital assets. We trace assets, identify scammers, and work with exchanges and law enforcement agencies around the world to support recovery and prosecution.

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Romance Scams

We undertake each romance scam investigation case-by-case, listening carefully to your story to develop a plan using scammer engagement, investigative tools and intelligence partners to trace, unmask and recovery your assets.

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Social Media Investigations

Our cyber investigators gather evidence to stop anonymous social media accounts from harassing you. In most cases we identify the IP address and personal information of the profile owner, and rule in / out suspects. Additionally, we provide actionable intelligence for police or legal action.

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Defamation & Harassment

Online defamation is often part of a broader smear campaign against individuals or businesses. We help clients find all mentions of defamation, build a case of proving online defamation and identify who is responsible for the smear campaign to sue for damages in court.

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Crypto Assets and Divorce

We combine the latest in digital forensic techniques with deep legal knowledge to uncover, prove, and assist with the recovery of hidden cryptocurrency and other digital assets in divorce cases.

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Corporate Investigations

Business Email Compromise

We trace stolen assets across borders, freeze funds where possible, and counter-engages to locate the perpetrators. We work directly with banks, crypto exchanges, and international law enforcement to bypass bureaucratic delays and accelerate case progress.

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Corporate Intelligence and Due Diligence Risk Assesments

We have global reach and access to closed-source intelligence partners. Our reports are superior to open source ones. We find detailed backgrounds of your partners to identify potential security threats, regardless of country or social status.

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Litigation support

We help lawyers and prosecutors build strong cases with digital forensic investigations and court-ready evidence. We assist with subpoena drafting, e-discovery, and expert witness testimony. Free consultations 
are available for all types of

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Logo for the World Police Summit featuring blue curved lines forming a shield shape, with the text "World Police Summit" beside it and the tagline "Inspiring Next-Generation Policing" below. A circular logo with the text "TRANSNATIONAL COALITION OF JUSTICE" and "STINGFORCE." The center features a stylized black insect icon, hexagonal patterns, and the phrase "JUSTICE AT SCALE.

How Rexxfield Empowers Law Enforcement and Legal Teams Worldwide

We deliver actionable intelligence, uncovering hidden evidence, and driving results in high-stakes cybercrime cases.

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Credibility Validated by Global Law Enforcement.

The official seal of the Federal Bureau of Investigation (FBI), featuring a shield with red and white stripes, green leaves, and a banner reading "Fidelity, Bravery, Integrity," surrounded by gold stars and text.

Case: RX3817001

We relied heavily on the Rexxfield report in writing up our justification for why we wanted to open this case as your products made it very clear that there was significant ongoing criminal conduct targeting a victim in [location redacted]. Also to Rexxfield’s credit, the complex frauds unit at [location redacted] was eager to open based in part on your work.

[Name redacted]

** the FBI does not officially endorse Rexxfield or our products. Rexxfield is a source, not a law enforcement agent. This feedback is provided by an individual FBI field agent, and it does not necessarily represent the views or position of the FBI more broadly.

Circular black and silver emblem with a star in the center, labeled “Cyber Fraud Task Force” and “United States Secret Service” with a red, white, and blue shield in the middle.

Case: RX153836711075

Thank you for sending over the Digital Asset Trace Report and supporting attachments…
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 and provides valuable corroboration for the data we’ve developed internally. Please extend my thanks to your team for the support and professionalism on this case. Your assistance and the resources you’re able to provide are greatly appreciated.

TFO, United States Secret Service
Cyber Fraud Task Force

** the FBI does not officially endorse Rexxfield or our products. Rexxfield is a source, not a law enforcement agent. This feedback is provided by an individual FBI field agent, and it does not necessarily represent the views or position of the FBI more broadly.

Maryland State Police badge featuring the Maryland flag’s black, gold, red, and white patterns, with “Maryland State Police” written in bold black letters on a yellow background at the top.

Case: See case study

Thank you for sending over the Digital Asset Trace Report and supporting attachments…
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 and provides valuable corroboration for the data we’ve developed internally. Please extend my thanks to your team for the support and professionalism on this case. Your assistance and the resources you’re able to provide are greatly appreciated.

US Marshall –
Maryland State Police

** the FBI does not officially endorse Rexxfield or our products. Rexxfield is a source, not a law enforcement agent. This feedback is provided by an individual FBI field agent, and it does not necessarily represent the views or position of the FBI more broadly.

Circular black and silver emblem with a star in the center, labeled “Cyber Fraud Task Force” and “United States Secret Service” with a red, white, and blue shield in the middle.

Case: RX153836711075

Thank you for sending over the Digital Asset Trace Report and supporting attachments…
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 and provides valuable corroboration for the data we’ve developed internally. Please extend my thanks to your team for the support and professionalism on this case. Your assistance and the resources you’re able to provide are greatly appreciated.

TFO, United States Secret Service
Cyber Fraud Task Force

** the FBI does not officially endorse Rexxfield or our products. Rexxfield is a source, not a law enforcement agent. This feedback is provided by an individual FBI field agent, and it does not necessarily represent the views or position of the FBI more broadly.

Maryland State Police badge featuring the Maryland flag’s black, gold, red, and white patterns, with “Maryland State Police” written in bold black letters on a yellow background at the top.

Case: See case study

We relied heavily on the Rexxfield report in writing up our justification for why we wanted to open this case as your products made it very clear that there was significant ongoing criminal conduct targeting a victim in [location redacted]. Also to Rexxfield’s credit, the complex frauds unit at [location redacted] was eager to open based in part on your work.

US Marshall –
Maryland State Police

** the FBI does not officially endorse Rexxfield or our products. Rexxfield is a source, not a law enforcement agent. This feedback is provided by an individual FBI field agent, and it does not necessarily represent the views or position 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.

Financial 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.

CUSTOM QUOTE

Digital Investigations

These cases typically involve identifying anonymous offenders and gathering legally admissible evidence.

USD

5,000

Minimum fee

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Financial Crime and Scams

Complex investigations involving internal threats, data breaches, or cyber fraud within organizations.

USD

15,000

Minimum fee

CONTACT US

We do not work with gambling, sex, or other objectionable industries.

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.

Ronnie Tokazowski

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.

Anna Brown

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.

Michael Roberts

Founder

Michael exited Rexxfield in December 2025, after founding the organization in 2008 and leading it for nearly 18 years. His career focused on complex cross-border cybercrime disruption and strengthening cooperation between government and private-sector investigators. Now retired from full-time crime-fighting, he devotes his time to public-benefit initiatives. He co-founded Stingbase.com, a crime-fighting SaaS platform, and Stingforce.com, a public-private collaboration network designed to deliver “Justice at Scale” in cyber-enabled crime investigations. Michael continues to provide select consulting services to law firms and prosecutors, and supports NGOs and charitable efforts assisting vulnerable populations affected by cybercrime.

Real 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

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.

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..

Michael is reliable, trustworthy, and delivers what he promises. I’m very glad to have Michael on my side.

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.

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..

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.

Rexxfield is there for you in your time of need. You are much more than just a “client” to Rexxfield, they take a personal interest in your story and work with you to resolve the problem. I have tried other “reputation management” companies and was not impressed. It seemed as if they were only out to take my money and could really care less if my reputation management problem was solved or not. I would highly recommend Rexxfield to anyone who has a reputation management problem.

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.

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.

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.

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.

Tracing a phone number back to a person

10/09/2025

Tracing a phone number back to a person

Brief Our client was subjected to disturbing anonymous text messages for more than one year. She needed help tracing a phone number. The messages were harassing, degrading, belittling, and meant

Teen Sextortion Victim on Social Media – Case Study

10/09/2025

Teen Sextortion Victim on Social Media – Case Study

2022: Teen Sextortion Case Study – How We Located the Person Sexually Extorting a Teenager on Instagram The Brief We were contacted by a worried father, whose teenage daughter was

ProtonMail Blackmailer Exposed

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

Tracing a phone number back to a person

10/09/2025

Tracing a phone number back to a person

Brief Our client was subjected to disturbing anonymous text messages for more than one year. She needed help tracing a phone number. The messages were harassing, degrading, belittling, and meant to cause hurt and anguish. She needed proof to bring this person to court and get justice. She suspected her husband-at-the-time to be responsible for

Teen Sextortion Victim on Social Media – Case Study

10/09/2025

Teen Sextortion Victim on Social Media – Case Study

2022: Teen Sextortion Case Study – How We Located the Person Sexually Extorting a Teenager on Instagram The Brief We were contacted by a worried father, whose teenage daughter was the victim of sextortion on social media. She developed an online relationship with someone on Snapchat, who she believed to be of the same age. After

ProtonMail Blackmailer Exposed

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

Talk to a Cybercrime Investigator Today

Talk to us in confidence. Whether you’re dealing with harassment, fraud, or stolen data, our experts are ready to help you take the next step.

BOOK A FREE CONSULTATION