Editorial company ranking

Top Cybersecurity Companies in USA

Compare 10 companies for security testing, risk, compliance, cloud security, incident response, and managed security services, including US-based providers and international teams serving US clients.

The right cybersecurity company should show work that matches the buyer's platform, users, technical constraints, and operating environment. A familiar company name is less useful than a clear plan and a delivery team with relevant experience.

Define assets, testing permissions, evidence needs, remediation support, reporting audience, and incident escalation before work begins.

Current shortlist

Top Cybersecurity Companies in USA

Scores are editorial guides based on public information. Confirm current team, pricing, and availability before signing a contract.

Rank#1

Serving USA clients

NCC Group

9.0Editorial score

NCC Group provides cybersecurity consulting, penetration testing, incident response, assurance for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationManchester, United Kingdom

Founded1999

Best forEnterprises that need broad security testing and advisory work

cybersecurity consultingpenetration testingincident responseassurance

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#2

Serving USA clients

Coalfire

8.9Editorial score

Coalfire provides cybersecurity, compliance, cloud security, penetration testing for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationWestminster, Colorado

Founded2001

Best forUS organizations facing security and compliance requirements

cybersecuritycompliancecloud securitypenetration testing

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#3

Serving USA clients

Bishop Fox

8.9Editorial score

Bishop Fox provides offensive security, penetration testing, red teaming, application security for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationTempe, Arizona

Founded2005

Best forCompanies seeking deep offensive security testing

offensive securitypenetration testingred teamingapplication security

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#4

Serving USA clients

NetSPI

8.9Editorial score

NetSPI provides penetration testing, attack surface management, application security, cloud security for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationMinneapolis, Minnesota

Founded2001

Best forEnterprises running ongoing security testing programs

penetration testingattack surface managementapplication securitycloud security

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#5

Serving USA clients

Rapid7

8.8Editorial score

Rapid7 provides vulnerability management, detection, cloud security, security services for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationBoston, Massachusetts

Founded2000

Best forSecurity teams combining software and advisory services

vulnerability managementdetectioncloud securitysecurity services

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#6

Serving USA clients

Mandiant, part of Google Cloud

9.0Editorial score

Mandiant, part of Google Cloud provides incident response, threat intelligence, security consulting, breach readiness for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationReston, Virginia roots

Founded2004

Best forOrganizations preparing for or responding to serious incidents

incident responsethreat intelligencesecurity consultingbreach readiness

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#7

Serving USA clients

Trail of Bits

8.9Editorial score

Trail of Bits provides software security, blockchain security, cryptography, research for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationNew York, New York

Founded2012

Best forTechnical teams with high-assurance security needs

software securityblockchain securitycryptographyresearch

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#8

Serving USA clients

GuidePoint Security

8.7Editorial score

GuidePoint Security provides security consulting, managed security, application security, cloud security for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationHerndon, Virginia

Founded2011

Best forUS enterprises coordinating several security workstreams

security consultingmanaged securityapplication securitycloud security

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#9

Serving USA clients

Optiv

8.8Editorial score

Optiv provides cybersecurity consulting, managed security, risk, technology integration for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationDenver, Colorado

Founded2015

Best forLarge organizations managing broad security programs

cybersecurity consultingmanaged securityrisktechnology integration

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Rank#10

Serving USA clients

Prescient Security

8.6Editorial score

Prescient Security provides penetration testing, compliance, cloud security, application security for companies and organizations serving the US market. Buyers should review relevant case studies, the proposed delivery team, and current commercial terms before making a final shortlist.

LocationNew York, New York

Founded2016

Best forGrowing companies preparing for customer security reviews

penetration testingcompliancecloud securityapplication security

Public service information
Published portfolio or case studies
Works with business clients
Current scope and pricing should be confirmed directly

Visit website

Side-by-side view

Compare the Shortlist

Use this table to spot differences in service focus, location, and buyer fit.

Rank	Company	Best For	Main Services	Location	Pricing Style	Founded	Link
#1	NCC Group	Enterprises that need broad security testing and advisory work	cybersecurity consulting, penetration testing, incident response, assurance	Manchester, United Kingdom	Project or team based	1999	Website
#2	Coalfire	US organizations facing security and compliance requirements	cybersecurity, compliance, cloud security, penetration testing	Westminster, Colorado	Project or team based	2001	Website
#3	Bishop Fox	Companies seeking deep offensive security testing	offensive security, penetration testing, red teaming, application security	Tempe, Arizona	Project or team based	2005	Website
#4	NetSPI	Enterprises running ongoing security testing programs	penetration testing, attack surface management, application security, cloud security	Minneapolis, Minnesota	Project or team based	2001	Website
#5	Rapid7	Security teams combining software and advisory services	vulnerability management, detection, cloud security, security services	Boston, Massachusetts	Project or team based	2000	Website
#6	Mandiant, part of Google Cloud	Organizations preparing for or responding to serious incidents	incident response, threat intelligence, security consulting, breach readiness	Reston, Virginia roots	Project or team based	2004	Website
#7	Trail of Bits	Technical teams with high-assurance security needs	software security, blockchain security, cryptography, research	New York, New York	Project or team based	2012	Website
#8	GuidePoint Security	US enterprises coordinating several security workstreams	security consulting, managed security, application security, cloud security	Herndon, Virginia	Project or team based	2011	Website
#9	Optiv	Large organizations managing broad security programs	cybersecurity consulting, managed security, risk, technology integration	Denver, Colorado	Project or team based	2015	Website
#10	Prescient Security	Growing companies preparing for customer security reviews	penetration testing, compliance, cloud security, application security	New York, New York	Project or team based	2016	Website

Buyer notes

How to Choose a Cybersecurity Company

Start with the work, not the sales deck. Ask each company to show a project that faced similar technical, budget, or delivery constraints.

Meet the people who will do the work. Confirm how scope changes are handled, what the reporting rhythm looks like, and which deliverables you own at the end.

Match the portfolioLook for projects close to your platform, audience, and delivery risk.

Confirm the working teamKnow who leads strategy, delivery, design, engineering, and quality review.

Review commercial termsCompare project assumptions, change requests, payment timing, and support terms.

Call referencesAsk previous clients about communication, quality, and how the company handled problems.

Common questions

FAQ

What should I compare before hiring a cybersecurity companies company?

Compare work that matches your project, the people assigned to the account, ownership of deliverables, communication routines, pricing terms, and what happens after launch.

Does a US office always mean the work is completed in the US?

No. Many companies use distributed teams. Ask where your delivery team is located, who leads the work, and which time zones are covered.

How should I use the editorial score?

Use it as a starting point for a shortlist. It reflects visible proof, service fit, company history, and relevance to US buyers. It is not a customer rating or a guarantee.

What proof should a company provide?

Ask for relevant case studies, working product links when available, references, delivery plans, team details, and a written estimate that explains assumptions.

Should I choose a fixed-price project or a dedicated team?

Fixed pricing can suit a clearly defined scope. A dedicated or time-based team is often more practical when requirements will change during discovery and delivery.

How many companies should be on my shortlist?

Three to five is usually enough. A smaller shortlist gives buyers time to compare the actual team, process, commercial terms, and quality of the proposed plan.

Keep researching

Top Cybersecurity Companies in USA

Top Cybersecurity Companies in USA

NCC Group

Coalfire

Bishop Fox

NetSPI

Rapid7

Mandiant, part of Google Cloud

Trail of Bits

GuidePoint Security

Optiv

Prescient Security

Compare the Shortlist

How to Choose a Cybersecurity Company

FAQ

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