Cybersecurity Companies in Seattle: 7 Firms Compared for 2026

Seattle runs on cloud infrastructure, and that changes what good security looks like here. The questions that matter are about identity, cloud configuration and the machines nobody can install an agent on, rather than about desktop antivirus. This guide compares seven firms with a real Puget Sound presence, including two headquartered in Seattle itself, on what they charge and what they genuinely do well.

Start Here: the 30 Second Version

If you read nothing else on this page, read the row that describes you. Every provider is compared in detail further down, but choosing the right category of firm matters far more than choosing between two firms in the same category.

Atlant Security editorial assessment, September 2026. This is our reading of the market, not a figure taken from any published source.

Does a Seattle Cybersecurity Company Need to Be in Seattle?

For cloud work, which is most of what Seattle businesses need, location is close to irrelevant. Assessing an AWS or Azure environment is done through an API from anywhere, and the right specialist is the one who has done it a hundred times.

It matters for the aerospace and defence supply chain around Puget Sound, where CMMC obligations and on-site assessment of manufacturing environments are real, and for maritime and port operations, which run operational technology that cannot be evaluated remotely. It also matters for healthcare systems with distributed clinical sites.

Otherwise, judge on whether the firm has genuine cloud depth. In this city that is the differentiator, and it is one where a small specialist frequently beats a large generalist.

What Drives Security Spending in Seattle: Cloud, Aerospace and Health Data

Seattle is the most cloud-native business environment in the United States, and the failure modes follow from that. The characteristic Seattle incident is not malware on a laptop; it is a storage bucket left public, an over-permissioned service account, a set of credentials committed to a repository, or an identity provider misconfigured so that a single compromised session grants far more than it should. None of those are solved by endpoint security products.

That is also why cloud penetration testing is a genuinely distinct discipline. Attacking a cloud environment is about permissions, trust relationships and metadata services rather than about memory corruption, and a firm with published cloud research is materially better at it than a generalist running a scanner.

The second pillar is aerospace and defence. The Puget Sound region has a dense supply chain around Boeing and its suppliers, and for those firms CMMC is a contractual requirement rather than a nice-to-have. A machine shop in Kent with forty employees may find that a defence contract depends on a security programme it has never built, and a local provider who has done that work before is worth a great deal.

The third is health data. Washington state has moved further than most on health privacy, with legislation extending protection to health-related data held by organisations that are not covered by HIPAA. If you build a wellness application, a fitness platform or anything that infers health information, that is worth a conversation with counsel rather than an assumption that HIPAA is the only thing that applies.

These are frameworks rather than statutes, named because Atlant Security publishes a page on each. Washington State has its own health data legislation; check its current scope with counsel rather than with a vendor summary.

Cybersecurity Companies in Seattle: Side-by-Side Comparison

All 7 firms below have a real presence in the Seattle area. The table is sorted in the same order as the reviews that follow.

Team size, hourly rate and minimum engagement are as published by each firm on the Clutch directory, checked 14 September 2026. They are the firms’ own figures, not our measurements. “Best for” is Atlant Security’s editorial assessment.

What kind of firm each one actually is

The table above compares them on price and location. This one compares them on what they are, which is the comparison that decides whether the engagement works. Most bad purchases in this market are the right firm in the wrong category.

Category is our reading of each firm’s own published description, quoted in its entry below. The limitation column is taken verbatim from the same entry. Checked against each firm’s live site in September 2026.

The 7 Best Cybersecurity Companies in Seattle for 2026

The first two are Seattle-headquartered specialists in network detection and offensive cloud testing. The rest are consultancies and managed providers serving the Puget Sound region.

How to Choose a Cybersecurity Company in Seattle

The providers below fall into several quite different categories, which makes the selection process matter more than the shortlist. Work through these five steps in order.

1. Work out which of the things below you are buying

   A managed provider keeps your estate running day to day. A testing firm tries to break in and reports how it went. A consultancy decides what you should do and in what order. A product vendor sells you a platform somebody then has to operate. The table above says which is which.

2. Ask who fixes the problem after it is found

   A scan, an audit and a penetration test all end with a document. Somebody then has to change firewall rules, rebuild permissions, roll out multi-factor authentication and argue with a vendor about a legacy application. Ask in writing whether remediation is included, excluded, or billed separately.

3. Get the scope and the price in writing before anyone starts

   A proposal that prices security services without listing what is monitored, tested or documented is not a proposal you can hold anyone to. Ask for a fixed or capped price and an explicit list of exclusions. The price transparency panel further down shows how many of these firms publish anything at all.

4. Confirm the provider is genuinely competent in your cloud, not just your office

   A firm that is excellent at Windows estates and laptops may have limited depth in identity federation, tenancy configuration or workload permissions. Ask what cloud work they have done, in which provider, and who did it. This is the most common capability gap in this market.

5. Ask what you keep if you leave after twelve months

   Documentation, configurations, log history, tenancy ownership. If the answer is that you keep nothing, you are not buying a security programme, you are renting one, and the renewal conversation will reflect that.

Five questions worth putting in the RFP

Atlant Security editorial, September 2026. These are the questions we would ask, based on what goes wrong in engagements we are called in to rescue.

What Cybersecurity Costs in Seattle

Seattle is an expensive market for talent and the rates reflect it. Local providers on this page publish $100 to $300 per hour, with the top of that band common for small specialist firms. Minimum engagements run from $1,000 to $10,000.

Cloud penetration testing is typically project priced and starts around $10,000 for a bounded assessment of a single environment, rising with account count and complexity. CMMC readiness for a small manufacturer generally runs into tens of thousands of dollars across policy, remediation and evidence work, and takes months rather than weeks.

A fixed-price independent audit generally runs $8,000 to $35,000. For a Seattle company whose entire estate is in the cloud, an assessment focused on identity and cloud configuration will usually surface more real risk per dollar than any product purchase.

Rows marked as published are the firms’ own figures, checked 14 September 2026. Rows marked as an estimate are Atlant Security’s, are labelled as such, and should be treated as a planning range rather than a quotation.

Frequently Asked Questions: Cybersecurity Companies in Seattle

Is Critical Insight still a Seattle cybersecurity company?

No. criticalinsight.com now redirects to lumificyber.com, indicating the brand was absorbed by Lumifi Cyber and no longer operates independently. We were unable to confirm what Washington state presence remains under the new owner, so we have not listed it rather than guess.

Which cybersecurity companies are headquartered in Seattle?

ExtraHop, which does network detection and response, and Rhino Security Labs, a penetration testing firm with a strong cloud security research record, are both headquartered in Seattle. Palantir, which appeared in earlier versions of this article, is headquartered in Denver and should not have been listed.

We are entirely in AWS. What kind of firm do we need?

A cloud security specialist rather than a traditional managed IT provider. The work is about identity, permissions, configuration and trust relationships between accounts, which is a different skill set from managing servers and desktops. Ask any candidate firm to describe a cloud privilege escalation they have actually found.

Does my Seattle-area manufacturing business need CMMC?

If you are in the Department of Defense supply chain, including as a subcontractor, the requirement flows down through your contract. Many small Puget Sound manufacturers are in that position without realising it. Check your contract clauses, and start early: readiness takes months.

What does a cybersecurity company cost in Seattle?

Published hourly bands on this page run $100 to $300, with minimum engagements from $1,000 to $10,000. Cloud penetration testing typically starts around $10,000. A fixed-price independent audit generally runs $8,000 to $35,000.

Can one provider cover both our AWS estate and our office IT?

Some claim to, and very few do both well, because they are different skills. Office IT is laptops, email, identity and the help desk, and proximity genuinely helps. A cloud estate is tenancy configuration, permissions and trust relationships between accounts, where competence matters and proximity does not. Plenty of Seattle companies run a local managed provider alongside a cloud specialist, which works perfectly well as long as the boundary between them is written down rather than assumed.

Is a network monitoring platform worth it for a mid-sized company?

It depends entirely on whether anyone will read the output. Network detection is genuinely valuable in estates full of devices that cannot run an agent. It is wasted money in an organisation with nobody assigned to act on what it finds. Decide who owns the alerts before you buy the platform.

Related reading: the 15 largest computer security companies compared, our fixed-price IT security audit, and virtual CISO services.

Looking wider than this list? cybersecuritycompanies.io is a free directory of cybersecurity companies worldwide, filterable by category, location and credentials.