Top Cybersecurity Companies for 2021

The Best Cybersecurity Companies

Product profiles in depth


Headquarters: Sunnyvale, California

Founded: 2000

Annual Revenue: $2.15 billion

Cybersecurity product categories: Network firewalls, anti-virus, intrusion prevention, Network access control (NAC), web application firewalls and endpoint security.

Appearances on eSecurity Planet‘s Top Vendors lists: 5

Fortinet has been steadily building a reputation as one of the top security companies around. Its revenues are increasing at a fast clip, it comes up repeatedly in eSecurity Planet top vendor lists, has high customer satisfaction ratings and does well in analyst ratings. Gartner gave it top place in unified threat management (UTM), and it was named a Leader in next-gen firewalls (NGFW). And the good news and announcements just keep on coming. During the month of December 2019, for example: Fortinet Secure SD-WAN can now scale up to 100,000 SD-WAN sites and has been adopted by more than 21,000 organizations; it has extended the integration of its cloud security portfolio with Google Cloud to offer customers migrating to Google Cloud Platform (GCP) advanced security for workloads and applications; it acquired Security Orchestration, Automation and Response (SOAR) platform provider CyberSponse; and it ranked well in the Gartner MQ for WAN Edge Infrastructure. Its continued momentum earns in top spot.


Headquarters: Clearwater, Florida

Founded: 2010

Annual Revenue: Privately held

Cybersecurity product categories: Cybersecurity awareness training

KnowBe4 is on a rocket ride. A startup getting to Unicorn status (valued at a billion or more) on the back of security training is quite a feat. But constant breaches of organizations large and small, and a trail of victims to ransomware and phishing opened a massive opportunity. This company has risen from Niche Player a couple of years back to being number one in security training, according to Gartner. It is the fastest-growing company in security, highly rated by Cybersecurity Ventures and has great customer satisfaction ratings – the best of all vendors on the list. Since moving to the top of the Gartner MQ tree in its category a few months ago, KnowBe4 hasn’t rested on its laurels. In fact, the company is on a mission to protect users from cybercriminals and employee stupidity. It is forging ahead with new partnerships, top hires from across the industry and an event blitz across the planet to educate users on phishing and other online threats.


CrowdStrike Falcon is popular with analysts and users alike. Falcon is near the top in raw security scores, but when factoring in the product’s advanced features, it wound up with an overall Detection score well above any other vendor on this list. It also scored high in Response, Management, Ease of Use, and Support. Users score it high in capabilities, implementation, cloud-based management, and Linux and technical support, among other areas.

Learn more about Crowdstrike Falcon products


Among Malwarebytes’ suite of cybersecurity products, their EDR solution has grown significantly in terms of feature offerings. Brute Force Protection focusses on Windows machine weaknesses created by the increasing number of remote employees at most enterprises. Their cloud solution receives positive reviews from users, and the platform works well alongside other security tools.

Learn more about Malwarebytes products


Netsparker provides an accessible and intuitive interface for website scanning and vulnerability identification. An in-depth knowledge of source code is not a barrier for entry for this solution. Netsparker offers solutions at the SMB, team and enterprise level, with options for on-premise deployment.

Learn more about Netsparker products

Cisco Logo


Headquarters: San Jose, California

Founded: 1984

Annual Revenue: $49.33 billion

Cybersecurity product categories: Next-generation firewalls, next-generation intrusion prevention, CASB, web gateway, NAC, advanced malware protection, email security, endpoint security, security management, VPN, security services

Appearances on eSecurity Planet‘s Top Vendors lists: 6

Cisco’s roots are in networking but by necessity it has expanded into security and storage. Over the years, it has built up a wide range of security products, including firewalls, intrusion prevention systems (IPS), UTM, malware protection and cloud protection. It doesn’t particularly shine on Gartner MQs but is rated as a Challenger in secure web gateways and UTM, and just made it into the Leaders quadrant on NGFW. At the end of 2019, Cisco unveiled a bold new vision for a new, more secure Internet and a new silicon architecture. Known as Cisco Silicon One, it is said to be the only networking silicon architecture of its kind. The company followed that with the release of the Cisco 8000 Series, carrier-class routers built on the new silicon. Coupled with tighter integration and partnerships with AWS, Cisco moves up in the standings.


Headquarters: San Francisco, California

Founded: 2003

Annual Revenue: $1.27 billion

Cybersecurity product categories: Security analytics, SIEM, user behavior analytics (UEBA), ransomware prevention, security automation

Appearances on eSecurity Planet‘s Top Vendors lists: 2

Splunk is the darling of the IT Service Management (ITSM) market. But it has expanded from ITSM into security and operations management. The Splunk platform is used by many to perform security analytics and for SIEM. The company came up tops in Gartner’s MQ for SIEM and has good customer satisfaction ratings. It’s taken a good chunk of business from long-term market incumbents and it looks like it will continue to do so for the next few years. A recent surge in its rate of expansion, along with the unveiling of a strong data-to-everything strategy, suggests that it will gather further market share from security incumbents.


Headquarters: Redmond, Washington

Founded: 1975

Annual Revenue: $110.360 billion

Cybersecurity product categories: Identity and access management, UEBA, threat protection, information protection, security management, cloud security, DDoS protection, application gateway

Appearances on eSecurity Planet‘s Top Vendors lists: 4

Microsoft has quietly built up a large security portfolio. This includes Active Directory for identity and access management, Windows Defender, Azure cloud security services such as Security Center, Key Vault, Azure DDoS Protection, Azure Information Protection and Application Gateway for protecting Web applications. Its position in our rankings comes due to its general strong showing in all areas considered, and its overall analyst rating. Gartner placed Microsoft as top dog in its Magic Quadrants (MQs) for endpoint protection and access management. Cybersecurity Ventures also include Microsoft in its top ten. However, recent issues with end of life notifications related to various Windows systems will place users in jeopardy over the coming years. Therefore, the company has moved down the rankings a little in recent months.


Headquarters: Armonk, New York

Founded: 1911

Annual Revenue: $77.898 billion

Cybersecurity product categories: Security analytics, services, patch management, encryption, SIEM, security orchestration, mobile security, fraud protection, network security, data protection, threat intelligence, application security, endpoint protection, identity and access management, mainframe security

Appearances on eSecurity Planet‘s Top Vendors lists: 8

IBM offers plenty of cybersecurity solutions, including Security Information and Event Management (SIEM), orchestration and incident response platform, cloud security and lots more. Part of the problem, though, is that IBM has such a huge portfolio that some of its offerings get lost within the catalog. It also isn’t the fastest in adding updates and customer ratings aren’t great. But it is well rated by analysts (Gartner Leader in access management and managed security services), graded high by Cybersecurity Ventures and comes up continually in eSecurity Planet top product lists. In recent months, it has added IBM Cloud Pak to protect data wherever it resides, adding AI features to its cloud identity solution and teamed up with Nozomi Networks to better secure industrial infrastructure.


Headquarters: Abingdon, United Kingdom

Founded: 1985

Annual Revenue: $711 million

Cybersecurity product categories: Firewalls, unified threat management, secure web gateway, secure email gateway, security management, anti-phishing, endpoint protection, mobile security, encryption, server security, consumer antivirus and Web filtering

Appearances on eSecurity Planet‘s Top Vendors lists: 4

Sophos delivers endpoint protection harnessing artificial intelligence (AI) as well as firewalls and network and cloud security products. It made the Leaders quadrant of Gartner’s MQs for endpoint protection and UTM. It consistently appears on our Top Vendors lists and is building its revenue base. Customer satisfaction ratings, though, need improvement. Recently, it overhauled its managed service provider (MSP) program to make it much easier for MSPs to deploy Sophos products across their customer bases. It also unveiled its Xstream Architecture for its XG Firewall and continues to generate press and earn kudos for how its lab detects impending security threats. And the company is about to be acquired by Thoma Bravo, which should increase its brand awareness in North America.

Palo Alto Networks

Headquarters: Santa Clara, California

Founded: 2005

Annual Revenue: $2.27 billion

Cybersecurity product categories: Next-generation firewall, UEBA, cloud security, endpoint protection, threat detection and prevention, application framework

Appearances on eSecurity Planet‘s Top Vendors lists: 3

Palo Alto may not have the revenue totals of some of the big boys, but like Fortinet, it is very much on the rise. It offers firewalls, endpoint protection, cloud access and more. It boasts 50,000 customers, including more than 85 of the Fortune 100. Gartner named it top in its NGFW MQ and it has good customer satisfaction ratings. It recently acquired micro-segmentation specialist Aporeto and has developed a closer relationship with Google Cloud. But a few earnings issues and an internal security breach have generated negative press of late.


Headquarters: Santa Clara, California

Founded: 1987

Annual Revenue: Privately held

Cybersecurity product categories: consumer antivirus and privacy protection, identity theft prevention, IDPS, web gateways, mobile security, enterprise cloud security, data protection, encryption, endpoint security, network security, security management, server security, security analytics, SIEM, web security, consulting, database security

Appearances on eSecurity Planet‘s Top Vendors lists: 6

McAfee has been a major player in security for a long time. It doesn’t seem to dominate any particular slice of the market, but it offers a lot of products that do consistently well in diverse areas. This includes antivirus, identity protection, SIEM (where Gartner names it a Leader), endpoint protection (graded a Visionary by Gartner) and secure web gateways (Gartner Challenger). Its customer satisfaction ratings are decent, too, and it keeps coming up in eSecurity Planet top vendor lists. As well as a closer partnership with Google Cloud, there could well be a merger with Norton on the cards.


Headquarters: San Jose, California

Founded: 1991

Annual Revenue: $20.85 billion

Cybersecurity product categories: Advanced threat protection, managed services, endpoint security, encryption, web gateway, email security, network security, cloud security, antivirus, identity theft protection, website security, mainframe security

Appearances on eSecurity Planet‘s Top Vendors lists: 6

Chipmaker Broadcom has been on a roll for the past year with the acquisition of CA Technologies and Symantec’s enterprise security business. The latter company in particular has been a persistent presence in the top echelon of security vendors for a quarter of a century. It offers enterprise, small business and consumer products. On the enterprise side, this includes endpoint protection, data loss prevention (DLP), web gateways, cloud access, threat intelligence and more. Like Microsoft, Symantec does well in Gartner MQs, tops in secure web gateways and a Leader in endpoint protection and managed security services. It also has decent product satisfaction scores. But it remains to be seen what Broadcom does with the riches it has inherited. Hence, it falls down the standings from our last list.

Trend Micro

Headquarters: Tokyo, Japan

Founded: 1988

Annual Revenue: ¥148.8 billion

Cybersecurity product categories: hybrid cloud security, intrusion prevention, advanced threat protection, encryption, endpoint security, email security, Web security, SaaS security, IoT security, threat intelligence

Appearances on eSecurity Planet‘s Top Vendors lists: 2

Trend Micro is another big name that has sagged in terms of brand appeal and market dominance. But the company still boasts a big revenue base and a broad array of security solutions that protect more than half a million organizations and a huge number of endpoints. The one area where it excels is in endpoint protection, where Gartner has included it as a Leader for 15 years. Customer satisfaction ratings are okay. However, only being named twice in our Top Vendors lists indicates that it is no longer top of mind on candidate lists for security products. Additionally, Forrester just scored it highest in cloud workload security. With its AWS relationship and the release of a security services platform for organizations building applications in the cloud, Trend Micro is gradually making its way up the standings.

Check Point

Headquarters: Tel Aviv, Israel, and San Carlos, California

Founded: 1993

Annual Revenue: $1.916 billion

Cybersecurity product categories: Advanced threat prevention, next generation firewall, UTM, encryption, secure gateway appliances, endpoint protection, remote access, cloud security, mobile security

Appearances on eSecurity Planet‘s Top Vendors lists: 4

Check Point offers firewall, network security, UTM and other products for enterprises and consumers. It is a Leader in Gartner MQs for UTM and NGFW. Customer satisfaction ratings could be better, but it comes up in eSecurity Planet top vendor lists regularly and has established a sound revenue base. The company continues to up its game with the acquisition of cloud security firm Dome9.


Headquarters: Sunnyvale, California

Founded: 2002

Annual Revenue: $717 million

Cybersecurity product categories: Advanced threat protection, email protection, encryption, data loss prevention, CASB, threat intelligence

Appearances on eSecurity Planet‘s Top Vendors lists: 1

Proofpoint offers email protection, network sandboxing, security awareness training, cloud protection and more. Its only appearance on Gartner MQs is as a Leader in security awareness training. It lags KnowBe4 in that category, but its acquisition of Wombat is a statement that it intends to challenge KnowBe4 in that market. If it can sustain revenue jumps like the 38% gain it made compared to 2017, it is likely to head steadily up the rankings. Most recently, the company made the Leaders quadrant in the latest Gartner MQ for Enterprise Information Archiving, and bought threat management platform vendor ObserveIT.


Headquarters: Redwood City, California

Founded: 2002

Annual Revenue: $333 million

Cybersecurity product categories: Web application firewalls, data masking, DDoS mitigation, database security

Appearances on eSecurity Planet‘s Top Vendors lists: 3

Imperva has made three eSecurity Planet Top Vendor lists and its profile is growing. Gartner ranks it far above the competition in web application firewalls and its customer satisfaction scores are very good. If it can sustain this while broadening its product portfolio, it can move higher in the standings. However, a recent setback earned a raft of negative press – hackers found a way around its firewall and customer data was exposed.

RSA (Dell Technologies)

Headquarters: Bedford, Massachusetts

Founded: 1982

Annual Revenue: Undisclosed

Cybersecurity product categories: SIEM, GRC, threat intelligence, network traffic analysis and forensics, endpoint security, security orchestration, UEBA, malware detection, fraud prevention, identity and access management

Appearances on eSecurity Planet‘s Top Vendors lists: 5

RSA has been a subsidiary of Dell for many years. As such, it may be suffering from a lack of attention within the sprawling Dell empire. It made it into the Leader category in only one Gartner MQ (SIEM) and comes up consistently in our Top Vendor lists. But its customer ratings are not that high. This indicates it has strong name recognition, but its product portfolio may be in need of a new lease on life. Further, weaknesses in RSA keys have called into question the security of its platform.
See our picks for top cybersecurity startups


Honorable Mentions

The following companies scored well but didn’t quite make our top vendor list.

  1. Kaseya (network and infrastructure monitoring, patch management)
  2. Barracuda (WAF, NGFW, UTM, email security, backup)
  3. Netskope (CASB)
  4. Exabeam (security intelligence, analytics)
  5. FireEye (endpoint and threat detection)
  6. Darktrace (AI for cyber defense)
  7. SonicWall (WAF, UTM, NGFW)
  8. Tanium (endpoint protection)
  9. LogRhythm (SIEM, UEBA, threat intelligence)
  10. Micro Focus (SIEM, access management, encryption, patch management)


Cybersecurity vendors were assigned scores based on their annual revenue, range of products, appearance in eSecurity Planet‘s Top Security Vendor lists, Gartner Magic Quadrant reports, Gartner Peer Review ratings, among other rankings. The top vendors are listed below, followed by some honorable mentions.

Drew Robb
Drew Robb
Drew Robb has been a full-time professional writer and editor for more than twenty years. He currently works freelance for a number of IT publications, including ServerWatch and CIO Insight. He is also the editor-in-chief of an international engineering magazine.

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