Company lists · Data refreshed September 2026
Top 17 Security consulting firms based in Columbia, United States
RevenueBase identified 39 security consulting firms headquartered in Columbia, United States as of September 2026 and tracks 483 professional contacts across them, including 132 with verified work emails. New York is the largest hub.
This list covers security consulting firms headquartered in Columbia, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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 17 largest security consulting firms based in Columbia, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 119 | ||||
“SealingTech, a Parsons Company, rapidly delivers innovative, agile cybersecurity solutions that modernize, protect, and defend the networks and systems of the federal government…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 58 | ||||
“JASINT is a Maryland based Limited Liability Company that began its business operations and staffing in July 2007.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | Secom SecurityPartial evidence | 37 | |||
“A trusted security partner for over 20 years, Secom provides state-of-the-art security solutions to commercial properties, government, religious institutions, and schools and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 30 | ||||
“SRC Technologies, INC provides information technology (IT) consultation services to government agencies and corporations alike, specializing in secure computing services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | Enterprise Security Solutions LLCPartial evidence | 24 | |||
“Enterprise Security Solutions helps data center, utility, enterprise, and government clients protect facilities, infrastructure, and personnel.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 15 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 14 | ||||
“eureka strategic is a small consulting firm dedicated to discovering and developing solutions to the most difficult problems our customers face.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Themis Insight, LLCPartial evidence | 14 | |||
“Themis Insight provides human focused insight to National Security clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Secure Innovations, LLCIndirect evidence | 13 | |||
“Our highly-skilled professionals have an average of 20+ years of experience working with, and in, the public sector.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | Ndepth Security, LLCPartial evidence | 10 | |||
“nDepth Security, LLC is a service-oriented, small business that strives to be a profound leader in providing support in all areas of systems engineering, information assurance…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | White Cliffs Consulting, LLCStrong evidence | 9 | |||
“White Cliffs Consulting is a small cyber intelligence and security firm providing high-end consulting and technical services in network analysis, software development and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Shield 7 ConsultingPartial evidence | 8 | |||
“Shield 7 operates as a Veteran Owned consulting firm and VAR based in Maryland.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2 | ||||
“Today, data has become the world’s most valuable (and vulnerable) resource.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | Ramparts SecurityIndirect evidence | 2 | |||
“The Ramparts team has over 3 decades of experience performing threat analysis for critical infrastructure and defense systems, and over a decade of experience leading adversarial…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | Holdfast Security Group, LLCStrong evidence | 2 | |||
“We are a security consulting and training company.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | Shinobi Enterprises, LLCStrong evidence | 1 | |||
“Shinobi offers confidential consulting and training with specific and in-depth expertise on China's national security and commercial espionage operations and tactics.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1 | ||||
“Many small businesses avoid cybersecurity because they are overwhelmed or by it, or because they feel uncertain, assuming they are protected.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 17 of 39 security consulting firms based in Columbia, United States
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Security consulting firms based in Columbia, United States at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 39 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among security consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- 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
- Companies headquartered in Columbia, United States whose own description of what they do matches “security consulting firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security consulting firms, and records with no verified work email. Companies headquartered outside Columbia are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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 listed company carries at least one verified work email, 132 across the full list. 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 6, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Security consulting firms by metro in the United States
- Security consulting firms in New York189
- Security consulting firms in Washington139
- Security consulting firms in Houston124
- Security consulting firms in Atlanta118
- Security consulting firms in Austin96
- Security consulting firms in Chicago90
- Security consulting firms in Dallas90
- Security consulting firms in Los Angeles88
- Security consulting firms in Miami88
- Security consulting firms in San Francisco73
- Security consulting firms in Arlington65
- Security consulting firms in Tampa63
- Security consulting firms in Denver56
- Security consulting firms in San Diego55
- Security consulting firms in Alexandria53
- Security consulting firms in Charlotte53
- Security consulting firms in Seattle52
- Security consulting firms in Boston47
- Security consulting firms in Orlando43
- Security consulting firms in San Antonio43
- Security consulting firms in Las Vegas41
- Security consulting firms in Columbia39
- Security consulting firms in Phoenix39
- Security consulting firms in Reston37
- Security consulting firms in Raleigh36
- Security consulting firms in Minneapolis35
- Security consulting firms in Baltimore33
- Security consulting firms in Mclean33
- Security consulting firms in Huntsville29
- Security consulting firms in Columbus28
- Security consulting firms in Herndon28
- Security consulting firms in San Jose28
- Security consulting firms in Pittsburgh27
- Security consulting firms in Ashburn26
- Security consulting firms in Colorado Springs26
- Security consulting firms in Scottsdale26
- Security consulting firms in Philadelphia25
- Security consulting firms in Richmond25
Frequently asked
How many security consulting firms are there based in Columbia, United States?
RevenueBase identified 39 security consulting firms headquartered in Columbia, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Sealing Technologies, A Parsons Company, headquartered in Columbia, tops this list with the largest team on record.
Which city has the most security consulting firms?
New York leads with 189 headquartered companies, followed by Washington (139) and Houston (124).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 132 verified decision-maker contacts tracked across these 39 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 6, 2026.
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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.
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