Company lists · Data refreshed November 2026
Top 25 Whistleblower investigation services worldwide
RevenueBase identified 359 company matches for whistleblower investigation services worldwide as of November 2026 and tracks 2,311 professional contacts across them, including 701 with verified work emails. The United States is the largest market and Washington the largest hub.
This list covers company matches for whistleblower investigation services worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for whistleblower investigation services follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest whistleblower investigation services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 234 contacts → | ||||
Exact match “Government Accountability Project is the nation’s leading whistleblower protection and advocacy organization.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 209 contacts → | ||||
Exact match “Case IQ provides investigative case management software, compliance automation tools, and whistleblower hotline solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 73 contacts → | ||||
Exact match “CSI is a full-service investigative firm that delivers key facts to give our clients an actionable advantage in a wide range of situations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 70 contacts → | ||||
Exact match “Investigative Group International (IGI) is the premier investigative firm conducting independent, high-touch investigations worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 56 contacts → | ||||
Exact match “Your centralized hub for whistleblowing and investigations, customized to your needs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 55 contacts → | ||||
Exact match “SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 50 contacts → | ||||
Exact match “BING is een toonaangevend bureau dat onderzoek verricht en training en advies verzorgt rondom integriteit en omgangsvormen.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 41 contacts → | ||||
Exact match “Workplace investigations provide employers with an effective tool to make informed employment decisions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 31 contacts → | ||||
Exact match “Phillips & Cohen LLP is the most successful law firm representing whistleblowers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 30 contacts → | ||||
Exact match “Every organisation wants to believe its people feel safe to speak up.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 30 contacts → | ||||
Exact match “Protect is the UK’s leading whistleblowing charity.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 27 contacts → | ||||
Exact match “We are one of Australia’s largest and most experienced independent firms exclusively dedicated to the conduct of respectful and rigorous workplace investigation services that meet…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 27 contacts → | ||||
Exact match “Het Huis voor Klokkenluiders draagt bij aan een integere samenleving.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 23 contacts → | ||||
Exact match “At Oracle Investigation Services, our aptitude is one of expertise, integrity and pursuit of the truth.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 21 contacts → | ||||
Exact match “Kohn, Kohn & Colapinto, based in Washington, D.C, is the nation’s leading law firm for whistleblower protection.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 20 contacts → | ||||
Exact match “Détecnet, expert en investigations, exerce son activité depuis dans le respect de l’éthique et du code déontologique de la profession.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 18 contacts → | ||||
Exact match “With over 35 years of experience, Stumar Investigations has established itself as a trusted leader in private investigation and related services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 15 contacts → | ||||
Exact match “Whistleblower Partners is a public interest law firm dedicated to assisting clients report corporate fraud and misconduct under the various U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 14 contacts → | ||||
Exact match “the digital whistleblowing solution for medium-sized companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 13 contacts → | ||||
Exact match “WHEN THE STAKES ARE HIGH, YOU NEED TO BE SURE When critical issues arise, you need objective answers that guide you toward the right decisions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 13 contacts → | ||||
Exact match “The Office of the Public Sector Integrity Commissioner of Canada investigates wrongdoing in the federal public sector and helps protect from reprisal whistleblowers and those who…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 13 contacts → | ||||
Exact match “We compile an Ex-Employee List.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 12 contacts → | ||||
Exact match “At Corporate Investigative Services, Inc, you will find experienced, world class professionals who do investigations thoroughly and get results that matter.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 11 contacts → | ||||
Exact match “TSCM Sweeps | Eavesdropping Detection | Debugging | Family Law Investigations | Insurance Investigations | Background Investigations For more than 30 years, Hawk PI has been the…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 10 contacts → | ||||
Exact match “Sme nezávislá štátna inštitúcia a naším poslaním je chrániť práva oznamovateľov nezákonnej činnosti, tzv.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “whistleblower investigation services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 359 whistleblower investigation services worldwide
See the full list, filter by size, metro and specialty, and access 701 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Whistleblower investigation services worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for whistleblower investigation services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “whistleblower investigation services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 701 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Whistleblower investigation services by location
1 lists · largest firstEvery Whistleblower investigation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “whistleblower investigation services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many whistleblower investigation services are there worldwide?
RevenueBase identified 359 company matches for whistleblower investigation services worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Government Accountability Project tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most whistleblower investigation services?
The United States leads with 92 companies. Every whistleblower investigation services list by country and city is linked on this page.
Which city has the most whistleblower investigation services?
Washington leads with 10 company records, followed by London (5) and Madrid (5).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 701 professional contacts with verified work emails tracked across these 359 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 359 whistleblower investigation services worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 whistleblower investigation services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 359 matching company records for whistleblower investigation services worldwide, with 2,311 tracked contacts and 701 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 whistleblower investigation services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Government Accountability Projectwhistleblower.orgHQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 234 contacts → |
“Government Accountability Project is the nation’s leading whistleblower protection and advocacy organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Case IQcaseiq.comHQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 209 contacts → |
“Case IQ provides investigative case management software, compliance automation tools, and whistleblower hotline solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  CSI Corporate Security And Investigationscsiinvestigators.comHQ: Monaca, PA, United StatesReported employees: 201-500 | Monaca, PA, United States | 201-500 | Exact match | 73 contacts → |
“CSI is a full-service investigative firm that delivers key facts to give our clients an actionable advantage in a wide range of situations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Investigative Group Internationaligint.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 70 contacts → |
“Investigative Group International (IGI) is the premier investigative firm conducting independent, high-touch investigations worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Faceupfaceup.comHQ: Charleston, SC, United StatesReported employees: 11-50 | Charleston, SC, United States | 11-50 | Exact match | 56 contacts → |
“Your centralized hub for whistleblowing and investigations, customized to your needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  SIRCOgroupesirco.comHQ: Montréal-nord, CanadaReported employees: 51-200 | Montréal-nord, Canada | 51-200 | Exact match | 55 contacts → |
“SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bing Bureau Integriteitbureauintegriteit.nlHQ: Amersfoort, NetherlandsReported employees: 11-50 | Amersfoort, Netherlands | 11-50 | Exact match | 50 contacts → |
“BING is een toonaangevend bureau dat onderzoek verricht en training en advies verzorgt rondom integriteit en omgangsvormen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  VAN Dermyden Makus LAW Corporationvmlawcorp.comHQ: Sacramento, CA, United StatesReported employees: 11-50 | Sacramento, CA, United States | 11-50 | Exact match | 41 contacts → |
“Workplace investigations provide employers with an effective tool to make informed employment decisions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Phillips & Cohen LLPphillipsandcohen.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 31 contacts → |
“Phillips & Cohen LLP is the most successful law firm representing whistleblowers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Safecallsafecall.co.ukHQ: Sunderland, United KingdomReported employees: 201-500 | Sunderland, United Kingdom | 201-500 | Exact match | 30 contacts → |
“Every organisation wants to believe its people feel safe to speak up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Protectprotect-advice.org.ukHQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 30 contacts → |
“Protect is the UK’s leading whistleblowing charity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Q Workplace Solutions PTY LTDqworkplace.com.auHQ: Brisbane, AustraliaReported employees: 11-50 | Brisbane, Australia | 11-50 | Exact match | 27 contacts → |
“We are one of Australia’s largest and most experienced independent firms exclusively dedicated to the conduct of respectful and rigorous workplace investigation services that meet…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Huisvoorklokkenluidershuisvoorklokkenluiders.nlHQ: The Hague, NetherlandsReported employees: 11-50 | The Hague, Netherlands | 11-50 | Exact match | 27 contacts → |
“Het Huis voor Klokkenluiders draagt bij aan een integere samenleving.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Oracle Investigation Servicesoisglobal.com.auHQ: Blackburn North, AustraliaReported employees: 51-200 | Blackburn North, Australia | 51-200 | Exact match | 23 contacts → |
“At Oracle Investigation Services, our aptitude is one of expertise, integrity and pursuit of the truth.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Kohn, Kohn & Colapinto, LLPkkc.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 21 contacts → |
“Kohn, Kohn & Colapinto, based in Washington, D.C, is the nation’s leading law firm for whistleblower protection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Détecnetdetecnet.frHQ: Tours, FranceReported employees: 11-50 | Tours, France | 11-50 | Exact match | 20 contacts → |
“Détecnet, expert en investigations, exerce son activité depuis dans le respect de l’éthique et du code déontologique de la profession.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Stumar Investigationsstumarinv.comHQ: Philadelphia, United StatesReported employees: 11-50 | Philadelphia, United States | 11-50 | Exact match | 18 contacts → |
“With over 35 years of experience, Stumar Investigations has established itself as a trusted leader in private investigation and related services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Whistleblower Partners LLPwhistleblower.lawHQ: San Francisco, DC, United StatesReported employees: 11-50 | San Francisco, DC, United States | 11-50 | Exact match | 15 contacts → |
“Whistleblower Partners is a public interest law firm dedicated to assisting clients report corporate fraud and misconduct under the various U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Legaltegritylegaltegrity.comHQ: Frankfurt, GermanyReported employees: 11-50 | Frankfurt, Germany | 11-50 | Exact match | 14 contacts → |
“the digital whistleblowing solution for medium-sized companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Barker Hutchinsonbarkerhutchinson.comHQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 13 contacts → |
“WHEN THE STAKES ARE HIGH, YOU NEED TO BE SURE When critical issues arise, you need objective answers that guide you toward the right decisions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Office Of The Public Sector Integrity Commissioner Of Canadapsic-ispc.gc.caHQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“The Office of the Public Sector Integrity Commissioner of Canada investigates wrongdoing in the federal public sector and helps protect from reprisal whistleblowers and those who…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Stratejic Relationshipsstratejic.comHQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 13 contacts → |
“We compile an Ex-Employee List.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Corporate Investigative Services, INCcispros.comHQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 12 contacts → |
“At Corporate Investigative Services, Inc, you will find experienced, world class professionals who do investigations thoroughly and get results that matter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Hawk PIhawkpi.comHQ: Atlanta, United StatesReported employees: 11-50 | Atlanta, United States | 11-50 | Exact match | 11 contacts → |
“TSCM Sweeps | Eavesdropping Detection | Debugging | Family Law Investigations | Insurance Investigations | Background Investigations For more than 30 years, Hawk PI has been the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Bratislava, SlovakiaReported employees: 11-50 | Bratislava, Slovakia | 11-50 | Exact match | 10 contacts → |
“Sme nezávislá štátna inštitúcia a naším poslaním je chrániť práva oznamovateľov nezákonnej činnosti, tzv.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Whistleblower investigation services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
358 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 359 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Whistleblower investigation services by location
1 lists · largest firstEvery Whistleblower investigation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for whistleblower investigation services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many whistleblower investigation services did RevenueBase find worldwide?
The saved snapshot records 359 matching company records, 2,311 tracked contacts and 701 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 whistleblower investigation services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/whistleblower-investigation-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 whistleblower investigation services worldwide
RevenueBase records 359 matching company records for whistleblower investigation services worldwide, with 2,311 tracked contacts and 701 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 whistleblower investigation services worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Government Accountability Projectwhistleblower.org HQ: Washington, DC, United StatesReported employees: Not recorded | Washington, DC, United States | Not recorded | Exact match | 234 contacts → |
“Government Accountability Project is the nation’s leading whistleblower protection and advocacy organization.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Case IQcaseiq.com HQ: Ottawa, ON, CanadaReported employees: 51-200 | Ottawa, ON, Canada | 51-200 | Exact match | 209 contacts → |
“Case IQ provides investigative case management software, compliance automation tools, and whistleblower hotline solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | CSI Corporate Security And Investigationscsiinvestigators.com HQ: Monaca, PA, United StatesReported employees: 201-500 | Monaca, PA, United States | 201-500 | Exact match | 73 contacts → |
“CSI is a full-service investigative firm that delivers key facts to give our clients an actionable advantage in a wide range of situations.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Investigative Group Internationaligint.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 70 contacts → |
“Investigative Group International (IGI) is the premier investigative firm conducting independent, high-touch investigations worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Faceupfaceup.com HQ: Charleston, SC, United StatesReported employees: 11-50 | Charleston, SC, United States | 11-50 | Exact match | 56 contacts → |
“Your centralized hub for whistleblowing and investigations, customized to your needs.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | SIRCOgroupesirco.com HQ: Montréal-nord, CanadaReported employees: 51-200 | Montréal-nord, Canada | 51-200 | Exact match | 55 contacts → |
“SIRCO offers efficient investigative methods to counter: Theft, Fraud, Collusion with Suppliers, Drug Trafficking, Threats, Trademarks Piracy, Labour Disputes, Harassment…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bing Bureau Integriteitbureauintegriteit.nl HQ: Amersfoort, NetherlandsReported employees: 11-50 | Amersfoort, Netherlands | 11-50 | Exact match | 50 contacts → |
“BING is een toonaangevend bureau dat onderzoek verricht en training en advies verzorgt rondom integriteit en omgangsvormen.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | VAN Dermyden Makus LAW Corporationvmlawcorp.com HQ: Sacramento, CA, United StatesReported employees: 11-50 | Sacramento, CA, United States | 11-50 | Exact match | 41 contacts → |
“Workplace investigations provide employers with an effective tool to make informed employment decisions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Phillips & Cohen LLPphillipsandcohen.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 31 contacts → |
“Phillips & Cohen LLP is the most successful law firm representing whistleblowers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Safecallsafecall.co.uk HQ: Sunderland, United KingdomReported employees: 201-500 | Sunderland, United Kingdom | 201-500 | Exact match | 30 contacts → |
“Every organisation wants to believe its people feel safe to speak up.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Protectprotect-advice.org.uk HQ: London, United KingdomReported employees: 11-50 | London, United Kingdom | 11-50 | Exact match | 30 contacts → |
“Protect is the UK’s leading whistleblowing charity.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Q Workplace Solutions PTY LTDqworkplace.com.au HQ: Brisbane, AustraliaReported employees: 11-50 | Brisbane, Australia | 11-50 | Exact match | 27 contacts → |
“We are one of Australia’s largest and most experienced independent firms exclusively dedicated to the conduct of respectful and rigorous workplace investigation services that meet…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Huisvoorklokkenluidershuisvoorklokkenluiders.nl HQ: The Hague, NetherlandsReported employees: 11-50 | The Hague, Netherlands | 11-50 | Exact match | 27 contacts → |
“Het Huis voor Klokkenluiders draagt bij aan een integere samenleving.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Oracle Investigation Servicesoisglobal.com.au HQ: Blackburn North, AustraliaReported employees: 51-200 | Blackburn North, Australia | 51-200 | Exact match | 23 contacts → |
“At Oracle Investigation Services, our aptitude is one of expertise, integrity and pursuit of the truth.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Kohn, Kohn & Colapinto, LLPkkc.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 21 contacts → |
“Kohn, Kohn & Colapinto, based in Washington, D.C, is the nation’s leading law firm for whistleblower protection.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Détecnetdetecnet.fr HQ: Tours, FranceReported employees: 11-50 | Tours, France | 11-50 | Exact match | 20 contacts → |
“Détecnet, expert en investigations, exerce son activité depuis dans le respect de l’éthique et du code déontologique de la profession.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stumar Investigationsstumarinv.com HQ: Philadelphia, United StatesReported employees: 11-50 | Philadelphia, United States | 11-50 | Exact match | 18 contacts → |
“With over 35 years of experience, Stumar Investigations has established itself as a trusted leader in private investigation and related services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Whistleblower Partners LLPwhistleblower.law HQ: San Francisco, DC, United StatesReported employees: 11-50 | San Francisco, DC, United States | 11-50 | Exact match | 15 contacts → |
“Whistleblower Partners is a public interest law firm dedicated to assisting clients report corporate fraud and misconduct under the various U.S.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Legaltegritylegaltegrity.com HQ: Frankfurt, GermanyReported employees: 11-50 | Frankfurt, Germany | 11-50 | Exact match | 14 contacts → |
“the digital whistleblowing solution for medium-sized companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Barker Hutchinsonbarkerhutchinson.com HQ: Toronto, ON, CanadaReported employees: 11-50 | Toronto, ON, Canada | 11-50 | Exact match | 13 contacts → |
“WHEN THE STAKES ARE HIGH, YOU NEED TO BE SURE When critical issues arise, you need objective answers that guide you toward the right decisions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Office Of The Public Sector Integrity Commissioner Of Canadapsic-ispc.gc.ca HQ: Ottawa, ON, CanadaReported employees: 11-50 | Ottawa, ON, Canada | 11-50 | Exact match | 13 contacts → |
“The Office of the Public Sector Integrity Commissioner of Canada investigates wrongdoing in the federal public sector and helps protect from reprisal whistleblowers and those who…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Stratejic Relationshipsstratejic.com HQ: Atlanta, GA, United StatesReported employees: 11-50 | Atlanta, GA, United States | 11-50 | Exact match | 13 contacts → |
“We compile an Ex-Employee List.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Corporate Investigative Services, INCcispros.com HQ: Cleveland, OH, United StatesReported employees: 11-50 | Cleveland, OH, United States | 11-50 | Exact match | 12 contacts → |
“At Corporate Investigative Services, Inc, you will find experienced, world class professionals who do investigations thoroughly and get results that matter.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Hawk PIhawkpi.com HQ: Atlanta, United StatesReported employees: 11-50 | Atlanta, United States | 11-50 | Exact match | 11 contacts → |
“TSCM Sweeps | Eavesdropping Detection | Debugging | Family Law Investigations | Insurance Investigations | Background Investigations For more than 30 years, Hawk PI has been the…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Bratislava, SlovakiaReported employees: 11-50 | Bratislava, Slovakia | 11-50 | Exact match | 10 contacts → |
“Sme nezávislá štátna inštitúcia a naším poslaním je chrániť práva oznamovateľov nezákonnej činnosti, tzv.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 359 company matches
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Whistleblower investigation services: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
358 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 359 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Whistleblower investigation services by location
1 lists · largest firstEvery Whistleblower investigation services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for whistleblower investigation services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many whistleblower investigation services did RevenueBase find worldwide?
The saved snapshot records 359 matching company records, 2,311 tracked contacts and 701 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 whistleblower investigation services worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/whistleblower-investigation-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗