Company lists · Data refreshed September 2026

Top 25 Security consulting firms based in Atlanta, United States

RevenueBase identified 118 security consulting firms headquartered in Atlanta, United States as of September 2026 and tracks 784 professional contacts across them, including 254 with verified work emails. New York is the largest hub.

This list covers security consulting 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
118Companies
784Contacts tracked
254Verified emails
Explore all 118 companies → Free signup · no credit card · 500 free credits

The 25 largest security consulting firms based in Atlanta, United States

Ranked by team size
Top 25 of 118 security consulting firms based in Atlanta, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
OSC EdgeIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-200150

“From CND in the Cloud to CSfC with Enterprise Remote Capabilities, OSC Edge empowers organizations with solutions that prepare them for today and tomorrow.”

Source: company website · checked Sep 6, 2026
2
ScybersIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-20089

“Scybers is a pure-play global cybersecurity firm.”

Source: company website · checked Sep 6, 2026
3
Versprite CybersecurityPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-20043

“VerSprite was created to fill a void in the area of security managed services where most firms continued to sell security products and services based upon compliance fear factor…”

Source: company website · checked Sep 6, 2026
4
TrustnetIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5033

“Since 2003, TrustNet has helped organizations mitigate cyber risks and achieve compliance efficiently and proactively.”

Source: company website · checked Sep 6, 2026
5
Genix CyberIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-20026

“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 6, 2026
6
Purplebox, INCStrong evidence
Atlanta, United StatesHQ checked Sep 6, 202611-5026

“Secure Cloud Solutions Consulting and Managed Services PurpleBox Security Services include assessment, design, implementation and management of information security, compliance…”

Source: company website · checked Sep 6, 2026
7Atlanta, GA, United StatesHQ checked Sep 6, 202651-20018

“PM Security Permitting provides expert consulting and permitting services.”

Source: company website · checked Sep 6, 2026
8
HanabytePartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5015

“HanaByte is a cybersecurity consultancy offering comprehensive services such as cloud security, security engineering, and compliance advisory services.”

Source: company website · checked Sep 6, 2026
9Atlanta, GA, United StatesHQ checked Sep 6, 20261-1015

“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, 2026
10
NDNBIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5014

“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 6, 2026
11
Cyberdata ProsPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5013

“Keeping up with the changing data security and compliance requirements is a full-time job.”

Source: company website · checked Sep 6, 2026
12
Serket-Tech SecurityPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5011

“Serket-Tech Security helps organizations transform compliance requirements into security advantages.”

Source: company website · checked Sep 6, 2026
13
Odin Enterprises, LLCPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-20010

“Odin Enterprises, LLC is a Georgia-based company founded as a security solutions provider specializing in the fields of crisis and risk management, insider threat mitigation…”

Source: company website · checked Sep 6, 2026
14
AssurancepointPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-109

“AssurancePoint is a quality-focused information security audit and compliance advisory firm.”

Source: company website · checked Sep 6, 2026
15
SureshieldPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-509

“SureShield serves leading healthcare, finance, defense, manufacturing, and other industries, as well as Managed Service Providers, focused on IT risk, security and compliance.”

Source: company website · checked Sep 6, 2026
16Atlanta, GA, United StatesHQ checked Sep 6, 202651-2008

“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, 2026
17
Iron Shield Protection, LLCIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-508

“Iron Shield Protection’s mission is to safeguard the lives of our clients, ensuring their freedom to pursue their endeavors without fear.”

Source: company website · checked Sep 6, 2026
18
Cittadella LLCPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-107

“At Cittadella, we're not just providing security solutions but revolutionizing security for the modern world.”

Source: company website · checked Sep 6, 2026
19Atlanta, GA, United StatesHQ checked Sep 6, 20261-107

“Pillar Technology Partners helps mid-sized organizations protect the data that matters most.”

Source: company website · checked Sep 6, 2026
20
ImaginexIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-2005

“ImagineX is a leading digital services firm whose mission is to help our clients and technologists to #BeBetter.”

Source: company website · checked Sep 6, 2026
21Atlanta, GA, United StatesHQ checked Sep 6, 202611-504

“Trustmarq provides strategic, tactical, and operational guidance to its clients.”

Source: company website · checked Sep 6, 2026
22Atlanta, GA, United StatesHQ checked Sep 6, 202611-504

“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 6, 2026
23
T4 Enterprises LLCPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-504

“T4 Enterprises is a boutique security firm that exists to assess the security needs and implement security plans for celebrities, executives, politicians, local businesses, places…”

Source: company website · checked Sep 6, 2026
24
DMG Security & CompanyPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-104

“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 6, 2026
25
9op IT Solutions, LLCPartial evidence
Atlanta, United StatesHQ checked Sep 6, 20261-104

“9op is a consulting organization focused on aligning and improving IT operations to meet the business objectives of organizations.”

Source: company website · checked Sep 6, 2026

Showing 25 of 118 security consulting firms based in Atlanta, United States

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Security consulting firms based in Atlanta, United States at a glance

As of Sep 6, 2026
1-10Median size (employees)
New YorkLargest hub · 189 HQs
Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
74
11-50
28
51-200
14
201-500
1
501-1,000
1

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 118 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 Atlanta, 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 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, 254 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

Frequently asked

How many security consulting firms are there based in Atlanta, United States?

RevenueBase identified 118 security consulting 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?

OSC Edge, headquartered in Atlanta, 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 254 verified decision-maker contacts tracked across these 118 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.