Company lists · Data refreshed September 2026
Top 23 Information security companies based in Atlanta, United States
RevenueBase identified 98 information security companies headquartered in Atlanta, United States as of September 2026 and tracks 747 professional contacts across them, including 247 with verified work emails. New York is the largest hub.
This list covers information security companies headquartered in Atlanta, 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 3, 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 23 largest information security companies based in Atlanta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 33 | ||||
“Fortuna Cysec delivers a comprehensive security ecosystem that seamlessly integrates with your existing infrastructure, offering end-to-end protection with the flexibility to…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 26 | ||||
“Genix Cyber - Empowering Cybersecurity Excellence Welcome to Genix Cyber, a distinguished US-based advisory firm founded by former CISOs and Auditors.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 19 | ||||
“Safeguard your clouds with complete visibility of every cyber asset.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 17 | ||||
“About Syba Syba is your smart, silent cyber-bodyguard, protecting you, your family, and your business from the digital threats of everyday life.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 16 | ||||
“HanaByte is a cybersecurity consultancy offering comprehensive services such as cloud security, security engineering, and compliance advisory services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | NDNBIndirect evidence | 14 | |||
“Founded in part by former Arthur Andersen and BDO professionals, the NDNB Alliance of Firms is a nationally recognized group of entities specializing in cybersecurity, data…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 13 | ||||
“Keeping up with the changing data security and compliance requirements is a full-time job.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 10 | ||||
“Serket-Tech Security helps organizations transform compliance requirements into security advantages.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 10 | ||||
“NCC Group is a leading global information assurance firm, providing freedom from doubt that all critical material is available, protected, and operating as it should be at all…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 | ||||
“Since 2015, Black Breach has established itself as an experienced-based, client-driven cybersecurity consulting and special services firm.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 7 | ||||
“Pillar Technology Partners helps mid-sized organizations protect the data that matters most.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | maxdefense.ioPartial evidence | 4 | |||
“MaxDefense LLC is a Managed Security Services Provider (MSSP) headquartered in Duluth, GA.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“Delivers high quality innovative cyber security solutions that help protect clients from malicious activity.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 4 | ||||
“We combine pre-breach due diligence with on-site security engineering and triage services to provide our clients with the expertise, tools, and workforce they need to better…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 | ||||
“DMG & Co is a team of security experts dedicated to protecting and securing the things that matter most to you.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 | ||||
“StealthNet AI is a technology driven cybersecurity company founded by offensive security professionals with real world testing backgrounds.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Omni Group ConsultingIndirect evidence | 3 | |||
“Omni Group Consulting (OGC) is a cybersecurity and privacy firm that specializes in certification readiness, maintenance, and CISO managed services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 | ||||
“GoTime Digital | The Apex Circuit Collective At GoTime Digital, we don’t just provide IT solutions-we engineer high-performance business acceleration through Cybersecurity…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | Vertical VARIndirect evidence | 3 | |||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | LOKXIndirect evidence | 3 | |||
“Trusted advisors and systems integrators in cybersecurity, cyber advisory services, advanced networking, and full-stack observability” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 | ||||
“The operational security of the cloud operations is the weakest link in cloud security.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 | ||||
“Founded in 2012, Stratigos Security provides consulting services on information security programs, strategy, and policy for businesses of every size.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | Open SAN Consulting LLCIndirect evidence | 2 | |||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 23 of 98 information security companies based in Atlanta, United States
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Information security companies based in Atlanta, United States at a glance
As of Sep 3, 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 Atlanta, over 98 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 information security companies, 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 Atlanta, United States whose own description of what they do matches “information security companies”. 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 information security companies, and records with no verified work email. Companies headquartered outside Atlanta 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, 247 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 3, 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.
Information security companies by metro in the United States
- Information security companies in New York172
- Information security companies in Houston102
- Information security companies in Atlanta98
- Information security companies in Miami98
- Information security companies in Washington95
- Information security companies in Austin93
- Information security companies in Chicago90
- Information security companies in Dallas88
- Information security companies in San Francisco82
- Information security companies in Tampa74
- Information security companies in San Diego59
- Information security companies in Los Angeles57
- Information security companies in Arlington53
- Information security companies in Charlotte51
- Information security companies in Boston49
- Information security companies in Denver49
- Information security companies in Orlando48
- Information security companies in Columbia47
- Information security companies in San Antonio41
- Information security companies in Las Vegas40
- Information security companies in Phoenix37
- Information security companies in Seattle36
- Information security companies in Reston34
- Information security companies in Alexandria33
- Information security companies in Scottsdale32
- Information security companies in Baltimore29
- Information security companies in Fairfax29
- Information security companies in Raleigh29
- Information security companies in Sheridan29
- Information security companies in Huntsville28
- Information security companies in Mclean28
- Information security companies in Pittsburgh28
- Information security companies in San Jose28
- Information security companies in Wilmington28
- Information security companies in Ashburn25
- Information security companies in Columbus25
- Information security companies in Minneapolis25
Frequently asked
How many information security companies are there based in Atlanta, United States?
RevenueBase identified 98 information security companies headquartered in Atlanta, 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?
Fortuna Cysec, headquartered in Atlanta, tops this list with the largest team on record.
Which city has the most information security companies?
New York leads with 172 headquartered companies, followed by Houston (102) and Atlanta (98).
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 247 verified decision-maker contacts tracked across these 98 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 3, 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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