Company lists · Data refreshed September 2026
Top 15 Security agencies based in Chicago, United States
RevenueBase identified 56 company matches for security agencies associated with Chicago, United States as of September 2026 and tracks 2,292 professional contacts across them, including 432 with verified work emails. Across the United States, New York is the largest hub for this category (128 companies); Chicago has 56.
This list covers company matches for security agencies associated with Chicago, United States, 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 September 21, 2026.
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 15 largest security agencies based in Chicago, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,138 contacts → | ||||
Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 2 | 240 contacts → | ||||
Exact match “AGB is the largest black-owned, award winning security firm that opened in Chicago in 2001 and has grown to 1300+ employees.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 3 | 142 contacts → | ||||
Exact match “Incorporated in 1996, S3: Safety Service Systems, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 4 | 61 contacts → | ||||
Exact match “Prudential Defense Solutions is a full‑service security provider offering professional guard services, door staff, and government‑contractor.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 5 | 45 contacts → | ||||
Exact match “Our mission at MFort Security Services is simple: to provide high-quality service and build partnerships.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 6 | 31 contacts → | ||||
Exact match “In April, 2019 Hillard Heintze joined Jensen Hughes.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 7 | 27 contacts → | ||||
Exact match “Trusted protection and investigative services with a commitment to excellence.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 8 | 18 contacts → | ||||
Exact match “Halo Security Group is a Chicago-based professional security services company providing comprehensive and reliable protection for businesses, residential communities, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 9 | 13 contacts → | ||||
Exact match “Universal Security, founded by retired Chicago Police Officer Mark Lundgren in August 1992, proudly carries a legacy of security excellence.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 10 | 12 contacts → | ||||
Exact match “Inner Valor is a premier provider of White Glove Security℠ and corporate investigation services, offering elite and personalized solutions to protect your assets, people, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 11 | 10 contacts → | ||||
Exact match “Security Consulting | Private Investigations | Law Enforcement Consulting | McCarthy Byrnes is a trusted security, investigations, and public safety advisory firm providing…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 12 | 10 contacts → | ||||
Exact match “Head of Security is a Chicago-based security risk management consulting firm that utilizes behavioral-science and protective-intelligence to help people, organizations, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “Full Service Security Provider, Alarm Response, Patrol, Armed Security, Unarmed Security, Off Duty Police, Alarm Installation and Monitoring, CCTV Cameras, Access Control.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 14 | 6 contacts → | ||||
Exact match “RedHawk is a Investigations and Security Risk Management firm specializing in comprehensive, professional and discreet services to a wide variety of US based and international…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase | |||||
| 15 | 4 contacts → | ||||
Exact match “E’CLAT offers a comprehensive range of intelligent security services.” Recorded in the RevenueBase company graph · Sep 21, 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 “security agencies”. 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 15 of 56 security agencies based in Chicago, United States
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Security agencies based in Chicago, United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 56 companies.
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.
- What qualifies
- Company records associated with Chicago, United States whose business descriptions match “security agencies” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 432 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 September 21, 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.
Security agencies by metro in the United States
- Security agencies in New York128
- Security agencies in Los Angeles112
- Security agencies in Houston94
- Security agencies in Miami68
- Security agencies in Atlanta59
- Security agencies in Dallas58
- Security agencies in Washington52
- Security agencies in Phoenix43
- Security agencies in Austin41
- Security agencies in Las Vegas39
- Security agencies in Denver30
- Security agencies in Seattle29
- Security agencies in San Antonio27
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 “security agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many security agencies are there based in Chicago, United States?
RevenueBase identified 56 company matches for security agencies associated with Chicago, United States as of September 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?
Titan Security Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most security agencies?
New York leads the United States with 128 company records, followed by Los Angeles (112) and Houston (94). Chicago has 56.
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 432 professional contacts with verified work emails tracked across these 56 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 September 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 56 security agencies based in Chicago, United States. Start with a free account, no credit card.
Download this list →Related lists
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- Security agencies based in Vancouver, Canada
- Security agencies based in Mumbai, India
- Security agencies based in New Delhi, India
- Security agencies based in Pune, India
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- Security agencies based in London, United Kingdom
- Security agencies based in Atlanta, United States
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security agencies based in Sao Paulo, Brazil
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Company intelligence · public preview
Top 15 security agencies based in Chicago, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 56 matching company records for security agencies based in Chicago, United States, with 2,292 tracked contacts and 432 verified work emails.
This public preview shows 15 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 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 15 security agencies based in Chicago, United States
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 |  Titan Security Grouptitan-security.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,138 contacts → |
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  AGB Investigative Servicesagbinvestigative.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 240 contacts → |
“AGB is the largest black-owned, award winning security firm that opened in Chicago in 2001 and has grown to 1300+ employees.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Safety Service Systems Inc. S3, INCsafetyservicesystems.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 142 contacts → |
“Incorporated in 1996, S3: Safety Service Systems, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Prudential Defense Solutionsprudentialdefense.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 61 contacts → |
“Prudential Defense Solutions is a full‑service security provider offering professional guard services, door staff, and government‑contractor.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Mfort Security Servicesmfortsecurity.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 45 contacts → |
“Our mission at MFort Security Services is simple: to provide high-quality service and build partnerships.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Hillard Heintze, A Jensen Hughes Companyjensenhughes.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 31 contacts → |
“In April, 2019 Hillard Heintze joined Jensen Hughes.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Arms Security Corporationarmssecuritycorp.comHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 27 contacts → |
“Trusted protection and investigative services with a commitment to excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Halo Security Grouphalosecuritygroup.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 18 contacts → |
“Halo Security Group is a Chicago-based professional security services company providing comprehensive and reliable protection for businesses, residential communities, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Universal Securityuniversalscty.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 13 contacts → |
“Universal Security, founded by retired Chicago Police Officer Mark Lundgren in August 1992, proudly carries a legacy of security excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Inner Valor, INCinnervalor.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 12 contacts → |
“Inner Valor is a premier provider of White Glove Security℠ and corporate investigation services, offering elite and personalized solutions to protect your assets, people, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Mccarthy Byrnesmccarthybyrnes.comHQ: Chicago, United StatesReported employees: 11-50 | Chicago, United States | 11-50 | Exact match | 10 contacts → |
“Security Consulting | Private Investigations | Law Enforcement Consulting | McCarthy Byrnes is a trusted security, investigations, and public safety advisory firm providing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Head Of Securityheadofsecurity.comHQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 10 contacts → |
“Head of Security is a Chicago-based security risk management consulting firm that utilizes behavioral-science and protective-intelligence to help people, organizations, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Stark Security INCstarksecurityinc.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 7 contacts → |
“Full Service Security Provider, Alarm Response, Patrol, Armed Security, Unarmed Security, Off Duty Police, Alarm Installation and Monitoring, CCTV Cameras, Access Control.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Redhawk Investigations & Securityconsult-redhawk.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 6 contacts → |
“RedHawk is a Investigations and Security Risk Management firm specializing in comprehensive, professional and discreet services to a wide variety of US based and international…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  E'clat Security Group, Pllceclatsecurity.orgHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 4 contacts → |
“E’CLAT offers a comprehensive range of intelligent security services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 56 company matches
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Security agencies: dataset insights
September 21, 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
54 records in the displayed employee bands.
2 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 United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 56 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: September 21, 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 ↗
Security agencies by metro in the United States
- Security agencies in New York128
- Security agencies in Los Angeles112
- Security agencies in Houston94
- Security agencies in Miami68
- Security agencies in Atlanta59
- Security agencies in Dallas58
- Security agencies in Washington52
- Security agencies in Phoenix43
- Security agencies in Austin41
- Security agencies in Las Vegas39
- Security agencies in Denver30
- Security agencies in Seattle29
- Security agencies in San Antonio27
Questions about this company list
What does Exact match mean for security agencies?
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 security agencies did RevenueBase find based in Chicago, United States?
The saved snapshot records 56 matching company records, 2,292 tracked contacts and 432 verified emails. The public preview displays 15 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: September 21, 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
Security agencies by geography
- Security agencies based in Sao Paulo, Brazil
- Security agencies based in Calgary, Canada
- Security agencies based in Mississauga, Canada
- Security agencies based in Ottawa, Canada
- Security agencies based in Toronto, Canada
- Security agencies based in Vancouver, Canada
- Security agencies based in Mumbai, India
- Security agencies based in New Delhi, India
- Security agencies based in Pune, India
- Security agencies based in Johannesburg, South Africa
- Security agencies based in London, United Kingdom
- Security agencies based in Atlanta, United States
Cite this list
RevenueBase Data Team. Top 15 security agencies based in Chicago, United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/security-agencies/united-states/chicago.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Security agencies based in Sao Paulo, Brazil
- Security agencies based in Calgary, Canada
- Security agencies based in Mississauga, Canada
- Security agencies based in Ottawa, Canada
- Security agencies based in Toronto, Canada
- Security agencies based in Vancouver, Canada
Company intelligence · public preview
Top 15 security agencies based in Chicago, United States
RevenueBase records 56 matching company records for security agencies based in Chicago, United States, with 2,292 tracked contacts and 432 verified work emails.
This public preview shows 15 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 21, 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 15 security agencies based in Chicago, United States
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 | Titan Security Grouptitan-security.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,138 contacts → |
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | AGB Investigative Servicesagbinvestigative.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 240 contacts → |
“AGB is the largest black-owned, award winning security firm that opened in Chicago in 2001 and has grown to 1300+ employees.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Safety Service Systems Inc. S3, INCsafetyservicesystems.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 142 contacts → |
“Incorporated in 1996, S3: Safety Service Systems, Inc.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Prudential Defense Solutionsprudentialdefense.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 61 contacts → |
“Prudential Defense Solutions is a full‑service security provider offering professional guard services, door staff, and government‑contractor.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mfort Security Servicesmfortsecurity.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 45 contacts → |
“Our mission at MFort Security Services is simple: to provide high-quality service and build partnerships.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Hillard Heintze, A Jensen Hughes Companyjensenhughes.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 31 contacts → |
“In April, 2019 Hillard Heintze joined Jensen Hughes.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Arms Security Corporationarmssecuritycorp.com HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 27 contacts → |
“Trusted protection and investigative services with a commitment to excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Halo Security Grouphalosecuritygroup.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 18 contacts → |
“Halo Security Group is a Chicago-based professional security services company providing comprehensive and reliable protection for businesses, residential communities, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Universal Securityuniversalscty.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 13 contacts → |
“Universal Security, founded by retired Chicago Police Officer Mark Lundgren in August 1992, proudly carries a legacy of security excellence.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Inner Valor, INCinnervalor.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 12 contacts → |
“Inner Valor is a premier provider of White Glove Security℠ and corporate investigation services, offering elite and personalized solutions to protect your assets, people, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Mccarthy Byrnesmccarthybyrnes.com HQ: Chicago, United StatesReported employees: 11-50 | Chicago, United States | 11-50 | Exact match | 10 contacts → |
“Security Consulting | Private Investigations | Law Enforcement Consulting | McCarthy Byrnes is a trusted security, investigations, and public safety advisory firm providing…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Head Of Securityheadofsecurity.com HQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 10 contacts → |
“Head of Security is a Chicago-based security risk management consulting firm that utilizes behavioral-science and protective-intelligence to help people, organizations, and…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Stark Security INCstarksecurityinc.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 7 contacts → |
“Full Service Security Provider, Alarm Response, Patrol, Armed Security, Unarmed Security, Off Duty Police, Alarm Installation and Monitoring, CCTV Cameras, Access Control.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Redhawk Investigations & Securityconsult-redhawk.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 6 contacts → |
“RedHawk is a Investigations and Security Risk Management firm specializing in comprehensive, professional and discreet services to a wide variety of US based and international…” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | E'clat Security Group, Pllceclatsecurity.org HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 4 contacts → |
“E’CLAT offers a comprehensive range of intelligent security services.” Recorded description excerpt · September 21, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 56 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Security agencies: dataset insights
September 21, 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
54 records in the displayed employee bands.
2 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 United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 56 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: September 21, 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 ↗
Security agencies by metro in the United States
- Security agencies in New York128
- Security agencies in Los Angeles112
- Security agencies in Houston94
- Security agencies in Miami68
- Security agencies in Atlanta59
- Security agencies in Dallas58
- Security agencies in Washington52
- Security agencies in Phoenix43
- Security agencies in Austin41
- Security agencies in Las Vegas39
- Security agencies in Denver30
- Security agencies in Seattle29
- Security agencies in San Antonio27
Questions about this company list
What does Exact match mean for security agencies?
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 security agencies did RevenueBase find based in Chicago, United States?
The saved snapshot records 56 matching company records, 2,292 tracked contacts and 432 verified emails. The public preview displays 15 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: September 21, 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
Security agencies by geography
- Security agencies based in Sao Paulo, Brazil
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- Security agencies based in Mississauga, Canada
- Security agencies based in Ottawa, Canada
- Security agencies based in Toronto, Canada
- Security agencies based in Vancouver, Canada
- Security agencies based in Mumbai, India
- Security agencies based in New Delhi, India
- Security agencies based in Pune, India
- Security agencies based in Johannesburg, South Africa
- Security agencies based in London, United Kingdom
- Security agencies based in Atlanta, United States
Cite this list
RevenueBase Data Team. Top 15 security agencies based in Chicago, United States. Snapshot: September 21, 2026. https://revenuebase.ai/companies/security-agencies/united-states/chicago.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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