Company lists · Data refreshed September 2026
Top 9 Security research firms based in Atlanta, United States
RevenueBase identified 27 security research firms headquartered in Atlanta, United States as of September 2026 and tracks 150 professional contacts across them, including 32 with verified work emails. New York is the largest hub.
This list covers security research firms 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 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 9 largest security research firms based in Atlanta, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | The Cipher BriefPartial evidence | 38 | |||
“The Cipher Brief is the go-to digital platform for the latest security news and high-level analysis.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 22 | ||||
“The Cyber Express by Cyble is a publication that aims to provide the latest news and analysis about the information security industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 15 | ||||
“Our team of subject matter experts bring decades of global security experience in some of the most complex and austere environments around the planet.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 4 | ||||
“Delivers high quality innovative cyber security solutions that help protect clients from malicious activity.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4 | ||||
“StealthNet AI is a technology driven cybersecurity company founded by offensive security professionals with real world testing backgrounds.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Opus Business TechnologiesPartial evidence | 2 | |||
“Opus is a cyber security firm headquartered out of Atlanta Georgia.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | Asteros Cybersecurity ServicesIndirect evidence | 1 | |||
“Asteros provides professional Cybersecurity services and consulting to small and medium business, education, enterprise, and non-profit organizations.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | White BOX SecurityIndirect evidence | 1 | |||
“Our mission is to help provide a better and more secure digital world through ethical hacking.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 9 of 27 security research firms based in Atlanta, United States
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Security research firms based in Atlanta, 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 Atlanta, over 27 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 research 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 Atlanta, United States whose own description of what they do matches “security research 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 research firms, 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, 32 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 research firms by metro in the United States
- Security research firms in New York58
- Security research firms in San Francisco37
- Security research firms in Miami32
- Security research firms in Dallas31
- Security research firms in Austin30
- Security research firms in Houston28
- Security research firms in Los Angeles28
- Security research firms in Washington28
- Security research firms in Atlanta27
Frequently asked
How many security research firms are there based in Atlanta, United States?
RevenueBase identified 27 security research firms 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?
The Cipher Brief, headquartered in Atlanta, tops this list with the largest team on record.
Which city has the most security research firms?
New York leads with 58 headquartered companies, followed by San Francisco (37) and Miami (32).
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 32 verified decision-maker contacts tracked across these 27 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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