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Cybersecurity Companies Directory

Find Top Cybersecurity Companies & MSSPs

Browse verified security providers across every category MSSPs running 24/7 SOC monitoring, MDR and incident response specialists, penetration testing firms, and GRC compliance consultants. Filter by state, industry and company size to find the right partner.

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NetMGM - Cybersecurity Company

NetMGM

Vienna, Virginia, United States

Network Management, Inc. (NetMGM) is a nationwide technology management and cybersecurity consulting company that builds, manages, secures and supports Information Technology infrastructure.

Founded Year: 1994

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Mimecast, Autotask, GoDaddy Hosting, Outlook, MailChimp SPF +12 more

NetWorks Group - Cybersecurity Company

NetWorks Group

Ann Arbor, Michigan, United States

NetWorks Group is a Managed Security Services Provider (MSSP) based in Ann Arbor, Michigan, founded in 1997. The company specializes in Ethical Hacking, offering expertise in Offensive Security, Defensive Security, and Compliance. Their mission is to simplify cybersecurity and help businesses enhance their security posture, enabling them to make informed risk decisions.

Founded Year: 1997

Company Size: 20 - 50 Employees

Industry: Computer & Network Security

Technologies: Route 53, Gmail, Outlook, Google Apps, MailChimp SPF +13 more

Netsurion - Cybersecurity Company

Netsurion

Fort Lauderdale, Florida, United States

Netsurion is a managed security service provider (MSSP) based in Fort Lauderdale, Florida, specializing in cybersecurity solutions for small to medium-sized businesses, particularly those in retail, hospitality, and healthcare. Founded in 1989, Netsurion has established itself as a leader in Managed Extended Detection and Response (Managed XDR) services, offering a comprehensive suite of cybersecurity and network management solutions.

Founded Year: 2009

Company Size: 250 - 500 Employees

Industry: Computer & Network Security

Technologies: DNS Made Easy, Outlook, UptimeRobot, Atlassian Cloud, Bootstrap Framework +6 more

Network Box USA - Cybersecurity Company

Network Box USA

Houston, Texas, United States

We are your 24x7x365 Managed Security Service Provider (MSSP). Network Box USA's ISO certified Security Operations Center monitors, manages, and mitigates cyber threats in real time so you don't have to.

Founded Year: 2003

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Route 53, Outlook, reCAPTCHA, WordPress.org, Google Tag Manager +6 more

New York Security Solutions - Cybersecurity Company

New York Security Solutions

New York, New York, United States

Future-Ready Security for Today's Decision-Makers.

Founded Year: 2004

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: Outlook, Microsoft Office 365, Zendesk, WP Engine, React Redux +1 more

Nomic - Cybersecurity Company

Nomic

Richardson, Texas, United States

Formerly Sentinel IPS. An affordable suite of network security services, including a Managed Network Detection and Response team, our unique Network Cloaking™ methodology, and CINS Active Threat Intelligence.

Founded Year: 1995

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Cloudflare DNS, Gmail, Google Apps, Microsoft Office 365, Zendesk +25 more

NopalCyber - Cybersecurity Company

NopalCyber

New York, New York, United States

NopalCyber is a managed security service provider based in New York City, founded in 2022. The company offers comprehensive cybersecurity solutions that are designed to be affordable and manageable for organizations of all sizes. NopalCyber specializes in both offensive and defensive cybersecurity, utilizing a holistic approach that integrates various tools and expert teams to protect IT infrastructures across cloud, endpoints, applications, and on-premises environments.

Founded Year: 2022

Company Size: 50 - 100 Employees

Industry: Computer & Network Security

Technologies: Cloudflare DNS, Outlook, Microsoft Office 365, CloudFlare Hosting, Gmail +9 more

Norm - Cybersecurity Company

Norm

Fareham, England, United Kingdom

NormCyber is a cybersecurity specialist company based in Fareham, United Kingdom, established in 2015. The company provides organizations with complete visibility and control over cyber risk through innovative and cost-effective solutions. NormCyber operates a 24/7 Security Operations Centre (SOC) that offers continuous protection, oversight, and incident response to safeguard clients' digital assets.

Founded Year: 2013

Company Size: 50 - 100 Employees

Industry: Computer & Network Security

Technologies: Outlook, MailChimp SPF, Microsoft Office 365, Atlassian Cloud, Pipedrive +16 more

NotSoSecure Claranet - Cybersecurity Company

NotSoSecure Claranet

London, England, United Kingdom

NotSoSecure Training is the cybersecurity training division of Claranet Cyber Security, focusing on practical education and penetration testing services. The company serves a global clientele, including FTSE250 and Fortune 500 companies, financial institutions, and major retailers. Their mission is to enhance organizations' cybersecurity posture and equip IT and security professionals with relevant skills based on real-world tactics.

Founded Year: 2013

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

OUTSOURCE - Cybersecurity Company

OUTSOURCE

Antrim, Northern Ireland, United Kingdom

OUTSOURCE, officially known as Outsource Solutions, is an IT company based in the UK and Ireland, specializing in cybersecurity and managed IT services. Founded in 2000 by CEO Terry Moore, the company has grown to nearly 100 employees across five locations, including Antrim, Belfast, Cookstown, Dublin, and Edinburgh. The headquarters is located in Kirkcaldy, Scotland.

Founded Year: 2000

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: MailJet, Sendgrid, Outlook, MailChimp SPF, Autotask +11 more

OmniCyber Security - Cybersecurity Company

OmniCyber Security

Solihull, England, United Kingdom

OmniCyber Security is a global cybersecurity firm with headquarters in the UK and Canada. The company serves over 500 organizations across North America, Europe, Africa, Asia, and Australia, providing tailored cybersecurity solutions to a diverse clientele that includes small businesses, governments, nonprofits, and large corporations. OmniCyber is CREST-accredited, demonstrating its commitment to high standards in cybersecurity services.

Founded Year: 2015

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: Cloudflare DNS, Sendgrid, Outlook, Microsoft Office 365, CloudFlare Hosting +2 more

Ontech - Cybersecurity Company

Ontech

Milwaukee, Wisconsin, United States

As a trusted advisor since 2004, Ontech Systems delivers quality IT solutions. Fostering longstanding relationships with a focus on customer service, we take pride in exceeding expectations. Through our primary service offerings, Ontech can act as your IT department, help with your next IT project and assist with IT vendor management. Since 2004, Ontech has acheived a 98% client retention rate - one of the highest in our industry. We provide IT support and consulting throughout the Greater Milwaukee and Fox Valley communities. Ontech specializes in working with businesses who have 10-250 users. Due to the wide variety of clients we work with, our solutions are flexible and customized to meet your current needs and future growth plans.

Founded Year: 2004

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: Outlook, Microsoft Office 365, Google Tag Manager, Facebook Login (Connect), Mobile Friendly +8 more

Ostra Cybersecurity - Cybersecurity Company

Ostra Cybersecurity

Eden Prairie, Minnesota, United States

Ostra Security is a managed cybersecurity service provider based in Eden Prairie, Minnesota. The company offers tailored cybersecurity solutions for businesses of all sizes, delivering protection comparable to that of Fortune 100 companies. Ostra's unique Cybersecurity Mesh Architecture (CSMA) integrates various tools and controls to create a cohesive security ecosystem, enhancing protection for modern, distributed enterprises.

Founded Year: 2018

Company Size: 20 - 50 Employees

Industry: Computer & Network Security

Technologies: Cloudflare DNS, Outlook, Microsoft Office 365, Mobile Friendly

ParksideTech IT Solutions and Support - Cybersecurity Company

ParksideTech IT Solutions and Support

Phoenix, Arizona, United States

ParksideTech IT Solutions and Support is a Managed Service Provider (MSP) based in Phoenix, Arizona, established in 2018. The company offers a wide range of IT solutions and managed services tailored for businesses of all sizes, focusing primarily on clients throughout Arizona.

Founded Year: 2018

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Cloudflare DNS, Constant Contact, Outlook, Microsoft Azure Hosting, Zoho SalesIQ +13 more

Patriot Consulting Technology Group - Cybersecurity Company

Patriot Consulting Technology Group

Irvine, California, United States

Patriot Consulting Technology Group is a cybersecurity and Microsoft technology consulting firm based in Irvine, California. Recognized as one of the top Microsoft Security Partners in the U.S., the company focuses on helping organizations reduce cybersecurity risks through secure deployments of Microsoft Cloud technologies, particularly Microsoft 365. With a strong ethical foundation and a performance-driven culture, Patriot Consulting has secured over 1 million users with Microsoft Security technology.

Founded Year: 2015

Company Size: 50 - 100 Employees

Industry: Information Technology & Services

Technologies: Cloudflare DNS, Outlook, MailChimp SPF, CloudFlare Hosting, Android +2 more

Pegasus - Cybersecurity Company

Pegasus

Kennett Square, Pennsylvania, United States

Pegasus Technologies is the IT department for many businesses and non-profit organizations in the Southeastern Pennsylvania and Northern Delaware region. We do everything from migrate cloud and server solutions to answer how-to questions from end users. We support our clients 24/7 and place a strong emphasis on preventative care. Most of our clients have between 5-300 computers per site, and we are also specialists who help larger organizations with specific technology needs. We find, install, and support the best technology to solve organizational challenges and work with owners and decision makers to create a long-term technology plan and budget. We then take responsibility for the day-to-day execution and management of the organization's IT needs.

Founded Year: 2003

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: Route 53, Outlook, Autotask, WP Engine, Active Campaign +12 more

Pentesec - Cybersecurity Company

Pentesec

England, United Kingdom

Pentesec is a UK-based managed cyber security services provider and technical consultancy, established in 2014 and part of The Charterhouse Group. The company focuses on delivering advanced cyber security solutions with a "Technology First" approach, emphasizing expert partnerships and customer-centric security.

Founded Year: 2014

Company Size: 20 - 50 Employees

Industry: Information Technology & Services

Technologies: Salesforce, Outlook, MailChimp SPF, Microsoft Office 365, DigitalOcean +10 more

Performive - Cybersecurity Company

Performive

Marietta, Georgia, United States

Performive is a managed IT services provider established in 2005, focusing on secure and compliant cloud solutions for mid-sized enterprises across various industries, including private equity, manufacturing, healthcare, legal, and financial services. The company specializes in managed IT infrastructure, cloud management, cybersecurity, and data resiliency, helping businesses optimize their IT operations and ensure the availability of mission-critical data.

Founded Year: 2005

Company Size: 50 - 100 Employees

Industry: Information Technology & Services

Technologies: DNS Made Easy, Outlook, Microsoft Office 365, CloudFlare Hosting, Mailchimp Mandrill +5 more

Periculo - Cybersecurity Company

Periculo

Malmesbury, England, United Kingdom

Cyber Security for Digital Health Companies

Founded Year: 2015

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Cloudflare DNS, Gmail, Google Apps, Stripe, Atlassian Cloud +10 more

Perimeterwatch - Cybersecurity Company

Perimeterwatch

New York, New York, United States

We are the experts in digital security

Company Size: 10 - 20 Employees

Industry: Information Technology & Services

Technologies: Mimecast, Outlook, Amazon AWS, Netlify, Mapbox +4 more

What We Cover

Types of Cybersecurity Companies in Our Directory

Whether you need a cybersecurity company near me, a national MSSP, or a specialized compliance firm our directory covers every segment. Browse our cybersecurity MSP database with 30,000+ MSSPs, MDR providers & SOC companies or explore our dedicated MSSP list for managed security service providers. To see the best-known vendors first, read our list of the top 100 cybersecurity companies. You can also browse managed IT service providers who bundle security with IT, or filter by industry and company size to find the exact fit.

Managed Security Service Providers (MSSP)

MSSPs deliver 24/7 SOC monitoring, SIEM management, threat detection, and incident response on a subscription basis. Ideal for SMBs and enterprises that need continuous security without building an in-house team.

Browse MSSPs →

Penetration Testing Companies

Pentest firms simulate real-world cyberattacks network, web app, social engineering, and red team ops to identify vulnerabilities before attackers do. Many serve healthcare, finance, and government sectors.

Find Pentest Firms →

Endpoint Detection & Response (EDR)

EDR vendors protect laptops, servers, and mobile devices from malware, ransomware, and zero-day threats. Key players include firms specializing in AI-driven threat hunting and behavioral analytics.

Browse EDR Companies →

Cloud Security Companies

Cloud security specialists secure AWS, Azure, and GCP environments through CSPM, CASB, and zero-trust architecture. Critical for businesses migrating workloads or running hybrid infrastructure.

Browse Cloud Security →

Incident Response & Forensics Firms

IR firms respond to active breaches, contain damage, perform root cause analysis, and conduct digital forensics. They help organizations recover faster and harden defenses post-incident.

Find IR Firms →

GRC & Compliance Consultants

Compliance firms help businesses meet HIPAA, PCI-DSS, SOC 2, ISO 27001, NIST, and CMMC requirements. They conduct gap assessments, audits, policy development, and ongoing compliance management.

Browse Compliance Firms →

Find Cybersecurity Companies by Business Size

Security needs vary by company size. Use our employee size filter to find the right-fit vendor from boutique firms serving small businesses to enterprise-grade MSSPs with 500+ staff.

Find Cybersecurity Companies Near Me

Looking for a local cybersecurity company near you? Our directory covers verified firms across all 50 US states. Filter by state to find cybersecurity companies in your city or region.

Cybersecurity Contact Database

Get verified CEO, CTO & CISO contacts for 15,000+ cybersecurity & MSSP companies in the USA

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Frequently Asked Questions

What are the top cybersecurity companies in 2026?

Cybersecurity providers fall into distinct categories, and the right one depends on what you need. MSSPs run 24/7 SOC monitoring and managed detection and response on an ongoing contract. Penetration testing firms deliver point-in-time assessments. Incident response specialists handle active breaches. GRC consultancies manage compliance frameworks like SOC 2, HIPAA and PCI DSS. Use the filters above to browse verified providers in each category by state, industry and company size.

How do I find cybersecurity companies near me?

Use our directory to find cybersecurity companies near you by filtering your state or city. We cover verified cybersecurity firms across all 50 US states from local boutique MSSPs to regional SOC providers. Simply select your state from the filter above to see companies in your area with full contact details.

Which are the best cybersecurity companies in the USA?

There is no single best provider it depends on your industry, compliance obligations, company size and whether you need ongoing monitoring or a one-time assessment. A 40-person healthcare practice with HIPAA requirements needs something different from a 2,000-person manufacturer with OT networks. Start by identifying the discipline you need, then filter this directory by state and company size to build a shortlist of three to compare.

What is the difference between an MSSP and a cybersecurity company?

An MSSP (Managed Security Service Provider) is a type of cybersecurity company that provides ongoing, managed security monitoring on a subscription basis 24/7 SOC, SIEM, and threat response. Broader cybersecurity companies may sell products, conduct one-time penetration tests, or provide consulting without ongoing management.

What services do cybersecurity companies typically offer?

Common services include: 24/7 SOC monitoring, penetration testing & vulnerability assessments, SIEM & threat intelligence, endpoint detection & response (EDR), identity & access management (IAM), cloud security (AWS/Azure/GCP), compliance support (HIPAA, PCI-DSS, SOC 2, CMMC), and incident response & forensics.

How do I choose the right cybersecurity company for my business?

Evaluate vendors based on specialization (network vs. cloud vs. compliance), certifications (CISSP, ISO 27001, SOC 2), industry experience (healthcare, finance, government), SLA response times, and company size. Use our directory filters to narrow by state, employee size, and industry to shortlist the best cybersecurity companies for your specific needs.

What certifications should a cybersecurity company have?

Key certifications include CISSP, CISM, CEH, CompTIA Security+, ISO/IEC 27001, SOC 2 Type II, PCI-DSS QSA, and FedRAMP authorization. Vendor-specific certs from CrowdStrike, Palo Alto Networks, Fortinet, and Microsoft are strong indicators of technical expertise.

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