Company lists · Data refreshed September 2026

Top 25 Enterprise security consulting firms based in Seattle, United States

Name: Enterprise security consulting firms based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 62 companies tracked

RevenueBase identified 62 enterprise security consulting firms headquartered in Seattle, United States as of September 2026 and tracks 468 professional contacts across them, including 235 with verified work emails. Across the United States, New York is the largest hub for this category (193 companies); Seattle has 62.

This list covers enterprise security consulting firms headquartered in Seattle, 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

62Companies

468Contacts tracked

235Verified emails

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The 25 largest enterprise security consulting firms based in Seattle, United States

Ranked by team size

Top 25 of 62 enterprise security consulting firms based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise security consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ioactive, INC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	107 contacts →
	Strong evidence “IOActive is a trusted partner for Global enterprises, providing research-fueled security services across all industries.” Source: RevenueBase Database · checked Sep 28, 2026
2	Anvil Secure	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	39 contacts →
	Strong evidence “Anvil is an information security consulting firm focused on top tier consulting.” Source: RevenueBase Database · checked Sep 28, 2026
3	Kalles Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	36 contacts →
	Partial evidence “Kalles Group partners with CIOs, CISOs, and security leaders to strengthen security programs, reduce operational risk, and build resilience during periods of change.” Source: RevenueBase Database · checked Sep 28, 2026
4	Advantage Partners	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	n/a	33 contacts →
	Partial evidence “Advantage Partners is a security & compliance organization dedicated to helping emerging technology companies navigate the complexities of security and compliance.” Source: RevenueBase Database · checked Sep 28, 2026
5	Mirai Security	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Partial evidence “We are a cybersecurity company specializing in governance, risk management and compliance, Cloud Security, and Application Security.” Source: RevenueBase Database · checked Sep 28, 2026
6	DSE	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “DSE is a boutique security firm with a focus on Active Directory.” Source: RevenueBase Database · checked Sep 28, 2026
7	Copperhead Consulting INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	21 contacts →
	Partial evidence “Copperhead Consulting is a team of highly capable Agents, Investigators, Special Operations Veterans and technical professionals.” Source: RevenueBase Database · checked Sep 28, 2026
8	Rhino Security Labs, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	20 contacts →
	Partial evidence “Rhino Security Labs is a top penetration testing and security assessment firm with a focus on cloud pentesting (AWS, GCP, Azure), network pentesting, web application pentesting…” Source: RevenueBase Database · checked Sep 28, 2026
9	Markgraf Consulting	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Strong evidence “Markgraf Consulting is a premier technology consulting firm specializing in SAP security, cloud solutions, and system architecture.” Source: RevenueBase Database · checked Sep 28, 2026
10	Airopath	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Partial evidence “Airopath takes pride in being a leader in mobility and security solutions for clients worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
11	Secure Source International, LLC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	10 contacts →
	Strong evidence “Secure Source International is a global security risk mitigation firm that serves family offices, HNW individuals, corporate enterprises and law firms throughout the US and Europe.” Source: RevenueBase Database · checked Sep 28, 2026
12	Fostec	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	8 contacts →
	Partial evidence “Founded in 1998, Fostec is a client-focused Information Technology consulting firm that designs solutions and provides technical expertise to small and mid-sized businesses…” Source: RevenueBase Database · checked Sep 28, 2026
13	Forge Technology Advisors	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Forge Technology Advisors provides a customized suite of IT and Telecommunications consulting services-including Cybersecurity, SASE, UCaaS, CCaaS, and Networking-tailored to meet…” Source: RevenueBase Database · checked Sep 28, 2026
14	Looi Consulting LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Partial evidence “Looi Consulting LLC, a dynamic US-based technology consulting and solutions powerhouse, specializes in propelling businesses forward by seamlessly integrating people and…” Source: RevenueBase Database · checked Sep 28, 2026
15	Vivid Technical Consulting LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Partial evidence “Vivid Technical Consulting makes cybersecurity compliance achievable for every contractor in the defense industrial base.” Source: RevenueBase Database · checked Sep 28, 2026
16	Enetics Networks	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Enetics Networks was founded in 1998 to provide smart, cost-effective technology solutions for businesses throughout Washington state.” Source: RevenueBase Database · checked Sep 28, 2026
17	Signal Of Western Washington	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	3 contacts →
	Partial evidence “At Signal Security of Western Washington, our unwavering commitment is to set the gold standard in security services across residential, commercial, retail, and institutional…” Source: RevenueBase Database · checked Sep 28, 2026
18	Differential Networks	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Strong evidence “We are an IT consulting team that partners with clients to elevate their IT security skills and knowledge in crafting, deploying, and supporting intelligent and leading-edge IP…” Source: RevenueBase Database · checked Sep 28, 2026
19	Positroniq, LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “At Positroniq, we help to protect organizations through assessment and advisory services designed to improve security, risk, and compliance programs and processes.” Source: RevenueBase Database · checked Sep 28, 2026
20	Crystal Peak Security	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “A small, surgical team of security specialists with deep expertise in embedded systems, IoT, and connected hardware.” Source: RevenueBase Database · checked Sep 28, 2026
21	ZOVE	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	2 contacts →
	Partial evidence “Zove Security secures the products and platforms that power innovation and underpin all our digital lives.” Source: RevenueBase Database · checked Sep 28, 2026
22	Culper Partners LLC	Strong evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “Culper Partners offers strategic business consulting at the intersection of technology, national security, law enforcement, public policy and regulation.” Source: RevenueBase Database · checked Sep 28, 2026
23	Section9labs	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Section9Labs is a startup based in Seattle, WA.” Source: RevenueBase Database · checked Sep 28, 2026
24	Verification Labs, LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Verification Labs is a Seattle-based security company that places an emphasis on doing extremely in-depth technical testing so we can provide our clients with the most thorough…” Source: RevenueBase Database · checked Sep 28, 2026
25	Stepfar Technology Group	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	1 contacts →
	Indirect evidence “At Stepfar Technology Group, we are dedicated to empowering businesses with cutting-edge technology solutions.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: enterprise security consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names enterprise security consulting firms.
Partial evidence: Its own public description names part of enterprise security consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise security consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 62 enterprise security consulting firms based in Seattle, United States

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Enterprise security consulting firms based in Seattle, United States at a glance

As of Sep 28, 2026

50.2%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 62 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 enterprise security consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Seattle, United States whose own description of what they do matches “enterprise security consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names enterprise security consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among enterprise security consulting firms, and records with no verified work email. Companies headquartered outside Seattle 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 its RevenueBase Smart Search 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, 235 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 28, 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.

Enterprise security consulting firms by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names enterprise security consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

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

RevenueBase identified 62 enterprise security consulting firms headquartered in Seattle, 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?

Ioactive, INC, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most enterprise security consulting firms?

New York leads the United States with 193 headquartered companies, followed by Washington (134) and Atlanta (127). Seattle has 62.

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 235 verified decision-maker contacts tracked across these 62 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 28, 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 Smart Search, 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.