Company lists · Data refreshed September 2026

Top 25 Security auditing firms based in Atlanta, United States

RevenueBase identified 77 security auditing firms headquartered in Atlanta, United States as of September 2026 and tracks 577 professional contacts across them, including 252 with verified work emails. New York is the largest hub.

This list covers security auditing 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
77Companies
577Contacts tracked
252Verified emails
Explore all 77 companies → Free signup · no credit card · 500 free credits

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

Ranked by team size
Top 25 of 77 security auditing 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 auditing 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
ApptegaIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202651-20063

“As cyber-threats and regulatory mandates continue to expand, organizations are challenged by the difficulties of implementing effective cybersecurity and compliance programs.”

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
RED SentryPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-5028

“Red Sentry delivers expert-led penetration testing to help businesses identify and fix security vulnerabilities before attackers can exploit them.”

Source: company website · checked Sep 6, 2026
6
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
7
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
8
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
9
NCC Group Escrow AssociatesIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 2026501-1,00010

“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 6, 2026
10
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
11
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
12Atlanta, GA, United StatesHQ checked Sep 6, 20261-107

“Design Compliance and Security is a leading provider of compliance and security services to businesses of all sizes throughout the United States.”

Source: company website · checked Sep 6, 2026
13Atlanta, 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
14
Efortresses, INCIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-107

“eFortresses, Inc.(a Gartner 2013 Cool Vendor) is a AI powered Cybersecurity SaaS company that allows our customers to self-assess, get validated, get trained, get certified, and…”

Source: company website · checked Sep 6, 2026
15
HacwatchPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-504

“Delivers high quality innovative cyber security solutions that help protect clients from malicious activity.”

Source: company website · checked Sep 6, 2026
16Atlanta, 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
17
stealthnet.aiPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-104

“StealthNet AI is a technology driven cybersecurity company founded by offensive security professionals with real world testing backgrounds.”

Source: company website · checked Sep 6, 2026
18
Gotime DigitalIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-103

“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 6, 2026
19
Stratigos SecurityPartial evidence
Atlanta, United StatesHQ checked Sep 6, 202611-502

“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 6, 2026
20
KailashIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-502

“Founded in 2020, Kailash is a specialized consultancy firm focused on cybersecurity, risk, and compliance services.”

Source: company website · checked Sep 6, 2026
21Atlanta, GA, United StatesHQ checked Sep 6, 202611-502

“Opus is a cyber security firm headquartered out of Atlanta Georgia.”

Source: company website · checked Sep 6, 2026
22
MirabilityIndirect evidence
Atlanta, GA, United StatesHQ checked Sep 6, 20261-102

“Mirability helps organizations keep IT and OT systems secure and compliant through its assess–guide–execute methodology.”

Source: company website · checked Sep 6, 2026
23Atlanta, GA, United StatesHQ checked Sep 6, 20261-102

“Firebrand Security Consulting is a professional services firm, specializing in cyber security.”

Source: company website · checked Sep 6, 2026
24Atlanta, GA, United StatesHQ checked Sep 6, 202611-501

“We provide our clients with consistent, process-driven outcomes that will be infused into your organization.”

Source: company website · checked Sep 6, 2026
25
Itrust Holdings INCPartial evidence
Atlanta, GA, United StatesHQ checked Sep 6, 202611-501

“iTrust provides cybersecurity and compliance solutions to help Web3 businesses build trust and security.”

Source: company website · checked Sep 6, 2026

Showing 25 of 77 security auditing firms based in Atlanta, United States

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

As of Sep 6, 2026
1-10Median size (employees)
New YorkLargest hub · 86 HQs
Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
50
11-50
21
51-200
5
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 77 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 auditing 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 auditing 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 auditing 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, 252 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.

Frequently asked

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

RevenueBase identified 77 security auditing 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 auditing firms?

New York leads with 86 headquartered companies, followed by Atlanta (77) and Austin (67).

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 252 verified decision-maker contacts tracked across these 77 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.