Looking for a list of cybersecurity companies? Cybersecurity is not one market. A company that protects your network does a different job from one that protects your passwords, your cloud or your backups. This guide introduces 100 cybersecurity companies, grouped by what they protect, with a short explanation of what each one does and who it suits.
It is a curated list, not a ranking by revenue. If you would rather have a provider run security for you, browse the top managed security service providers.
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The top cybersecurity companies include Palo Alto Networks, Fortinet, Check Point and Zscaler in network security; CrowdStrike, SentinelOne and Microsoft in endpoint protection; and Okta in identity. The list below groups 100 cybersecurity companies by what they protect, so you can compare vendors in the area you care about.
We selected the companies in this top 100 cybersecurity companies list by how widely their products are used, how much of the security market they cover, and how relevant they are to businesses and the managed service providers that support them. Descriptions come from each company's public product information. Where a company has been acquired, we say so and still list it by its own name, because that is how customers search for it. We only show headquarters and founding year when they are well established.
These companies protect the traffic between users, offices, data centers and the cloud, using firewalls, secure access services and zero trust models.
Builds next-generation firewalls and a broad platform covering cloud security, secure access and security operations. In 2026 it also brought identity security under the same roof by completing its acquisition of CyberArk.
Known for
Good fit for
Large organizations that want one vendor across network, cloud and security operations.
Sells high-performance firewalls and connects them with switching, wireless, SASE and security operations through its Security Fabric, using its own security chips for speed.
Known for
Good fit for
Organizations that want networking and security managed together, from branch offices to data centers.
One of the longest-running network security vendors, known for firewall technology and for sharing threat intelligence across its products through ThreatCloud.
Known for
Good fit for
Enterprises and governments that prioritize threat prevention and consolidated management.
Delivers zero trust security from the cloud, so users reach applications through its network instead of a corporate VPN or on-site appliances. It added managed detection and response by acquiring Red Canary.
Known for
Good fit for
Companies replacing VPNs and legacy gateways with a cloud-delivered model.
Runs a large global network that protects and speeds up websites and applications, and uses the same network to give employees zero trust access to company resources.
Known for
Good fit for
Teams that want application protection and zero trust from a single cloud platform.
Focuses on secure access to the web, cloud apps and data. It inspects traffic to stop threats and to keep sensitive data from leaving the company.
Known for
Good fit for
Organizations with heavy SaaS and cloud usage that need strong data protection.
Combines networking and security into one cloud service, so branch offices, remote workers and cloud resources are connected and protected together.
Known for
Good fit for
Distributed businesses that want to retire separate WAN and security appliances.
The security business of Cisco, covering firewalls, secure access, multi-factor authentication and, since the Splunk acquisition, security analytics.
Known for
Good fit for
Organizations that already run Cisco networking and want security from the same vendor.
Best known as a content delivery network, and now with a large security business that protects websites, APIs and data centers from attacks.
Known for
Good fit for
Large public-facing sites and APIs that face heavy attack traffic.
Provides application delivery and security, controlling how traffic reaches applications and blocking attacks at the application layer.
Known for
Good fit for
Enterprises running many applications across data centers and clouds.
Makes firewalls and related security products for small and mid-sized businesses, often sold and managed through channel partners.
Known for
Good fit for
SMBs and managed service providers looking for cost-effective network security.
Offers firewalls and unified security for small and mid-sized organizations, sold largely through a network of managed service providers.
Known for
Good fit for
MSPs standardizing security across many small customers.
Provides email protection, network and application security, and backup, with products designed for partners and managed service providers.
Known for
Good fit for
Small and mid-sized businesses and the MSPs that support them.
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Endpoint companies protect laptops, servers and phones. Managed detection and response (MDR) providers go further and have analysts watch for attacks and respond for you.
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Cloud-native endpoint protection built around a single lightweight agent and a shared data platform, with threat hunting and incident response services on top.
Known for
Good fit for
Organizations of all sizes that want endpoint, identity and cloud protection from one agent.
Endpoint, cloud and identity security with automated detection and response driven by AI, designed to reduce the workload on analysts.
Known for
Good fit for
Teams that want automated response without a large security staff.
Microsoft sells security across its cloud and productivity stack, from endpoint protection to a cloud SIEM and identity management.
Known for
Good fit for
Microsoft 365 and Azure customers who want security built into what they already use.
A security company with decades of antivirus history, now offering a platform that covers endpoints, networks, email and cloud workloads.
Known for
Good fit for
Enterprises and service providers needing broad coverage across endpoint and cloud.
Combines endpoint and firewall products with managed detection and response, popular with mid-sized businesses and partners. It added the Secureworks security operations business in 2025.
Known for
Good fit for
Mid-sized organizations and MSPs that want products plus a managed service.
Romanian security company with products for consumers, businesses and service providers, widely used through its GravityZone business platform.
Known for
Good fit for
Businesses and MSPs wanting endpoint protection with strong detection.
Slovak company known for lightweight antivirus, now a full endpoint and detection platform for businesses.
Known for
Good fit for
Small and mid-sized organizations with a mix of devices.
Symantec's enterprise security products now sit inside Broadcom, covering endpoint security, data loss prevention and secure web gateways for large organizations. Symantec itself was founded in 1982.
Known for
Good fit for
Large enterprises with long-standing Symantec deployments.
Runs a managed security operations service in which its analysts monitor customer environments around the clock.
Known for
Good fit for
Mid-sized organizations that cannot staff a 24/7 security team.
Managed endpoint detection and response built for small and mid-sized businesses and the IT providers that serve them.
Known for
Good fit for
MSPs and small businesses that want enterprise-style protection at a manageable cost.
A specialist in managed detection and response, now part of Zscaler, where analysts investigate and confirm threats before alerting customers.
Known for
Good fit for
Organizations that want expert analysts to investigate threats for them.
Canadian provider of managed detection and response with a 24/7 security operations team.
Known for
Good fit for
Mid-sized organizations in regulated industries.
Managed detection and response provider that works with the security tools a customer already owns instead of asking them to replace those tools.
Known for
Good fit for
Organizations that want MDR without changing their existing tools.
Gives IT and security teams real-time visibility and control of endpoints, so they can find, patch and fix devices at scale.
Known for
Good fit for
Large organizations with many endpoints to manage and protect.
Software company serving managed service providers with remote monitoring and management, security and backup tools.
Known for
Good fit for
MSPs that need one set of tools to manage and secure many customers.
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Most breaches involve stolen or misused credentials. These companies control who can sign in, what they can reach and how privileged accounts are protected.
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Identity provider for employees and customers, offering single sign-on, multi-factor authentication and lifecycle management for apps and devices.
Known for
Good fit for
Organizations managing access across many cloud applications.
Specialist in privileged access management, which controls the powerful accounts attackers target most. It became part of Palo Alto Networks in February 2026.
Known for
Good fit for
Enterprises protecting administrator and machine identities.
Focuses on identity governance: deciding and reviewing who has access to what, and proving it for audits.
Known for
Good fit for
Large organizations with strict compliance requirements.
Identity and access management aimed at large enterprises, offering single sign-on, multi-factor authentication and customer identity.
Known for
Good fit for
Enterprises with complex, hybrid identity environments.
Privileged access management provider formed from the 2021 merger of Thycotic and Centrify.
Known for
Good fit for
Organizations controlling administrator access across servers and cloud.
Privileged access and remote access security for IT teams and service desks.
Known for
Good fit for
IT teams that need secure administrator and vendor access.
Identity governance and administration, with a cloud platform now extended to cover AI agents and non-human identities.
Known for
Good fit for
Enterprises governing access across cloud and on-premises systems.
A password manager for individuals, families and businesses that has expanded into securing which devices and apps employees can use.
Known for
Good fit for
Teams that want strong password habits without friction.
A password and secrets manager that has grown into privileged access management for businesses.
Known for
Good fit for
Businesses and MSPs managing many credentials.
An open-source password manager that offers free personal use and business plans, with self-hosting options.
Known for
Good fit for
Teams that value open-source software and self-hosting.
Protects identities by adding verification to logins across systems that cannot support modern authentication.
Known for
Good fit for
Organizations with older Active Directory and legacy applications.
Specializes in protecting Microsoft Active Directory and Entra ID, where many attacks begin.
Known for
Good fit for
Enterprises that rely on Active Directory.
Swedish maker of the YubiKey, a hardware security key that stops phishing by requiring a physical device to sign in.
Known for
Good fit for
Organizations that need phishing-resistant authentication.
Provides identity, digital certificates and hardware security modules, including the nShield line used to protect encryption keys.
Known for
Good fit for
Enterprises and governments handling sensitive keys and credentials.
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As software moves to the cloud, these companies find weaknesses in cloud setups, containers and application code, and help developers fix them early.
Cloud security platform known for scanning cloud environments without agents and showing how separate risks combine into real attack paths. It became part of Google in March 2026.
Known for
Good fit for
Organizations running workloads on AWS, Azure or Google Cloud.
Agentless cloud security that reads cloud workloads directly to find vulnerabilities, misconfigurations and exposed data.
Known for
Good fit for
Cloud teams that want quick visibility without installing agents.
Protects containers and cloud-native applications from build to runtime, and maintains the open-source Trivy scanner.
Known for
Good fit for
Teams building on Kubernetes and containers.
Cloud and container security company that created Falco, the open-source runtime threat detection tool.
Known for
Good fit for
DevOps and security teams running Kubernetes.
Developer-first security that finds vulnerabilities in code, open-source dependencies, containers and infrastructure as code while developers work.
Known for
Good fit for
Engineering teams that want security inside their normal workflow.
Application security testing delivered from the cloud, covering static analysis, dynamic analysis and software composition analysis.
Known for
Good fit for
Regulated organizations that need application security testing at scale.
Application security platform focused on finding and fixing vulnerabilities in code and open-source components.
Known for
Good fit for
Large development organizations.
Software supply chain company behind the Nexus Repository, helping teams control which open-source components they use.
Known for
Good fit for
Teams managing open-source risk.
Builds hardened, minimal container images and libraries to reduce vulnerabilities in the software supply chain.
Known for
Good fit for
Teams that want container images with fewer known vulnerabilities.
Web application and data security vendor, part of Thales since 2023.
Known for
Good fit for
Organizations protecting web applications and databases.
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These companies find sensitive data, control who can reach it, and make sure a business can recover quickly if an attack such as ransomware gets through.
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Focuses on data security: it finds sensitive data, shows who can reach it and flags unusual access.
Known for
Good fit for
Organizations with large volumes of files and cloud data.
Data protection and cyber recovery platform that helps organizations restore quickly after ransomware.
Known for
Good fit for
Enterprises that prioritize ransomware recovery.
Data protection and management company that combined with Veritas' enterprise data protection business in late 2024.
Known for
Good fit for
Enterprises consolidating backup and recovery.
Backup and recovery software used by many businesses and service providers to protect and restore data.
Known for
Good fit for
Organizations and MSPs that need reliable backup.
A long-established data protection vendor that now stresses cyber resilience, including recovery from attacks.
Known for
Good fit for
Enterprises with complex, hybrid environments.
Cloud-based data protection delivered as a service, with no hardware to manage.
Known for
Good fit for
Organizations that prefer fully cloud-delivered backup.
Data security posture management: it discovers and classifies sensitive data across cloud and SaaS to show where the risk sits.
Known for
Good fit for
Organizations that need to find sensitive data across cloud applications.
French technology group with a large digital security business covering encryption and key management, and Imperva since 2023.
Known for
Good fit for
Enterprises and governments protecting data with encryption.
Software company that brings together tools such as Digital Guardian, Tripwire, Cobalt Strike and GoAnywhere.
Known for
Good fit for
Organizations that need a range of security and compliance tools.
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Security teams use these tools to collect logs, find vulnerabilities, detect attackers and understand who is targeting them.
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Security analytics and SIEM platform used to collect and analyze logs, now part of Cisco.
Known for
Good fit for
Security operations centers with large data volumes.
Vulnerability management and security operations platform, and the maker of the Metasploit penetration testing framework.
Known for
Good fit for
Mid-sized and large organizations managing vulnerabilities and detection.
Vulnerability management company that created Nessus, now focused on exposure management across IT, cloud and operational technology.
Known for
Good fit for
Teams that scan for and prioritize vulnerabilities.
Cloud-based vulnerability management and compliance, scanning assets without heavy on-site setup.
Known for
Good fit for
Organizations managing vulnerabilities and compliance at scale.
Incident response and threat intelligence specialist, part of Google Cloud since 2022.
Known for
Good fit for
Organizations responding to, or preparing for, serious breaches.
Threat intelligence provider whose platform turns data from across the web into alerts for security teams. It is now part of Mastercard.
Known for
Good fit for
Security teams that want threat intelligence built into their tools.
UK-based company that uses self-learning AI to learn what is normal in a network and to spot unusual activity.
Known for
Good fit for
Organizations wanting AI-driven anomaly detection.
Network detection and response focused on spotting attackers who are moving inside hybrid networks.
Known for
Good fit for
Security teams trying to reduce alert noise.
Network detection and response that analyzes network traffic to find threats and performance problems.
Known for
Good fit for
Enterprises needing visibility across network traffic.
Builds an inventory of every device, user and cloud asset by connecting to existing tools, then flags gaps in security coverage.
Known for
Good fit for
Teams that struggle to know what they own.
Security analytics and SIEM platform that uses behavior analytics to find threats.
Known for
Good fit for
Security operations teams wanting analytics-driven SIEM.
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Email remains one of the most common ways attackers get in. These companies filter malicious messages and train people to spot them.
Email security and human risk company that blocks phishing and malware and trains employees.
Known for
Good fit for
Organizations that see email as their main attack path.
Email security and archiving with a focus on stopping phishing and protecting collaboration tools.
Known for
Good fit for
Businesses and MSPs protecting email.
Uses behavioral AI to detect email attacks that get past traditional filters, such as business email compromise.
Known for
Good fit for
Organizations targeted by business email compromise.
Security awareness training and phishing simulation platform for employees.
Known for
Good fit for
Organizations that need to train employees at scale.
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Factories, utilities, hospitals and buildings run on systems that were never designed to face the internet. These companies find and protect them.
Industrial cybersecurity for operational technology environments such as power, manufacturing and water.
Known for
Good fit for
Utilities and industrial companies.
Protects industrial, healthcare and building systems by finding connected devices and monitoring them for risk.
Known for
Good fit for
Manufacturers, hospitals and critical infrastructure operators.
Asset visibility and security for IT, IoT and operational technology, now part of ServiceNow.
Known for
Good fit for
Large organizations with many connected devices.
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Customers increasingly ask suppliers to prove their security. These companies automate audits and measure risk.
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Compliance automation that connects to a company's systems and collects evidence for SOC 2, ISO 27001 and similar frameworks.
Known for
Good fit for
Startups and growing companies preparing for audits.
Compliance automation platform that continuously monitors controls and gathers audit evidence.
Known for
Good fit for
Companies that need continuous compliance.
Rates the security posture of companies from the outside, and is widely used for third-party risk.
Known for
Good fit for
Organizations assessing their vendors.
Security ratings and exposure management for cyber risk and third-party risk.
Known for
Good fit for
Enterprises and insurers measuring cyber risk.
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To know whether defenses work, these companies attack them first, either with ethical hackers or with automated tools.
Platform that connects organizations with ethical hackers through bug bounty and penetration testing programs.
Known for
Good fit for
Companies that want hackers testing their products.
Crowdsourced security testing that matches organizations with security researchers.
Known for
Good fit for
Teams that want crowd-based testing.
Automates penetration testing by safely attacking a network to prove which weaknesses can really be exploited.
Known for
Good fit for
Teams that want to test their defenses continuously.
Autonomous penetration testing built around its NodeZero tool.
Known for
Good fit for
Teams that need frequent penetration tests.
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Not every organization builds its own security team. These firms advise, assess and run security programs for others. To compare managed providers directly, see our MSSP list.
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Security solutions and services provider that advises, builds and runs security programs for large organizations.
Known for
Good fit for
Enterprises that need a security integrator.
Security consultancy and reseller that helps organizations choose, deploy and operate security tools.
Known for
Good fit for
Mid-sized and large organizations.
Cybersecurity advisory and assessment firm known for compliance work, including FedRAMP assessments, and for penetration testing.
Known for
Good fit for
Cloud providers and regulated organizations.
UK consultancy providing security testing, advisory and software escrow.
Known for
Good fit for
Organizations that need independent security assessment.
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These brands protect individuals and families, and some also serve small businesses and service providers.
Parent of well-known consumer brands including Norton, Avast, LifeLock and Avira, offering antivirus, identity protection and VPN.
Known for
Good fit for
Individuals and families.
Consumer security company known for antivirus, identity and privacy protection.
Known for
Good fit for
Individuals and families.
Known for its malware removal tool, and now offering endpoint and consumer protection.
Known for
Good fit for
Individuals and small businesses.
Swiss privacy company behind Proton Mail and Proton VPN, with products built around encryption.
Known for
Good fit for
People and teams who put privacy first.
Combines backup and cyber protection for businesses and service providers.
Known for
Good fit for
MSPs and small businesses.
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Several large security companies are based in Asia and serve mostly local markets, so they are less familiar elsewhere.
Major Chinese cybersecurity group offering endpoint, network and data security and security services, mostly to large domestic organizations.
Known for
Good fit for
Enterprises and government bodies in China.
Chinese technology company known for network security and cloud infrastructure.
Known for
Good fit for
Customers in China and across Asia.
Chinese security company with a large consumer base for antivirus and browsers, which also serves enterprises.
Known for
Good fit for
Chinese consumers and organizations.
South Korean security company known for its V3 antivirus and for enterprise security products.
Known for
Good fit for
Organizations in South Korea.
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Most companies above build security products. If you want someone to run those tools and watch for attacks for you, you need a managed security service provider. The best MSSP companies differ by size, industry focus, response times and the tools they support, so compare several before you choose. Our MSSP list and the cybersecurity companies directory are built for exactly that.
Use this quick cyber security companies list to jump straight to any of the 100 cyber security vendors above.
To understand the difference between providers, read MSP vs MSSP, then compare managed security providers or top managed service providers.
This list covers 100 well-known cybersecurity companies, grouped by what they protect: network security, endpoints, identity, cloud and applications, data, security operations, email, industrial systems, compliance, testing, services, consumer security and Asia. Names that appear often in enterprise security include Palo Alto Networks, Fortinet, CrowdStrike, Zscaler, Okta and Microsoft.
You are on one. This page lists 100 cybersecurity companies by category, and the A to Z quick list above links to every company. For more providers, browse our cybersecurity companies directory, or request a custom list filtered by your target market.
We selected companies based on how widely their products are used, how much of the security market they cover, and how relevant they are to businesses and the managed service providers that support them. Descriptions are written from each company's public product information.
No. This is a curated list, not a revenue ranking. Companies are grouped by what they protect, and the numbers on each card are for reference only. A larger company is not automatically the better choice for your business.
Managed security service providers monitor, manage and respond to threats on your behalf, so they are different from the vendors that build security products. Providers on this page that offer managed security services include Arctic Wolf, eSentire, Expel, Huntress, Red Canary and Sophos MDR. To compare MSSPs side by side, use our MSSP list.
There is no single official ranking, because the right MSSP depends on your size, industry and tools. Start with our MSSP list and the cybersecurity companies directory, then compare service levels, response times, certifications and customer references before you choose.
A cybersecurity vendor builds and sells security technology such as endpoint protection, firewalls or identity software. An MSSP monitors, manages and responds to threats for you, often using vendor products. Most companies on this page are vendors.
There is no single answer, because it depends on what you need to protect and who will manage it. Many small businesses buy security through a managed service provider. Companies such as Huntress, Sophos, Bitdefender, ESET, WatchGuard and SonicWall build products with small businesses and service providers in mind.
We provide company and decision-maker contact data for the managed service and security market. Request a tailored sample with the form at the top of this page and tell us the segment, region or company size you want to reach.
Several well-known security brands have been acquired. For example, CyberArk became part of Palo Alto Networks in February 2026, Wiz became part of Google in March 2026, and Red Canary is part of Zscaler. We list them separately because customers still know and search for them by their own names.
We review the list regularly as companies launch products, merge or are acquired. It was last updated on October 2, 2026. If you spot something that has changed, let us know through our contact page.
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