Companies
Companies whose business is security — 65 listed, ranked by market cap, and 181 venture-backed, by last reported valuation. Conglomerates with a security division are deliberately excluded.
Region
Sector
65 companies
- Palo Alto Networks, Inc.PANWNetwork security, SASE and cloud protection; the largest pure-play vendor$304.9Bmarket cap
- CrowdStrike Holdings, Inc.CRWDCloud-native endpoint protection and managed threat hunting$216.8Bmarket cap
- Fortinet, Inc.FTNTFirewalls and integrated network security for distributed enterprises$115.9Bmarket cap
- Cloudflare, Inc.NETEdge network, DDoS mitigation and application protection$107.3Bmarket cap
- Zscaler, Inc.ZSZero-trust network access delivered from the cloud$30.0Bmarket cap
- VeriSign, Inc.VRSNDNS infrastructure and domain-name registry operations$25.0Bmarket cap
- Okta, Inc.OKTAWorkforce and customer identity management$25.0Bmarket cap
- F5, Inc.FFIVApplication delivery, API security and web application firewalls$22.3Bmarket cap
- Rubrik, Inc.RBRKCyber resilience and Zero Trust data security; IPO'd 2024$20.7Bmarket cap
- Akamai Technologies, Inc.AKAMEdge security, bot management and DDoS defence$16.6Bmarket cap
- Gen Digital Inc.GENNorton, Avast and LifeLock consumer security brands$16.5Bmarket cap
- Check Point Software Technologies Ltd.CHKPFirewalls, SASE and threat prevention; Israel's oldest security major$13.3Bmarket cap
- Elm Company7203.SRDigital security and government platforms in Saudi Arabia$12.3Bmarket cap
- SailPoint, Inc.SAILIdentity governance and administration for large enterprises$10.9Bmarket cap
- 360 Security Technology Inc.601360.SSConsumer and enterprise endpoint security at national scale$9.2Bmarket cap
- SentinelOne, Inc.SAutonomous endpoint and cloud workload protection$7.7Bmarket cap
- Sangfor Technologies Inc.300454.SZFirewalls, SASE and zero-trust; China's largest security vendor$7.3Bmarket cap
- Qualys, Inc.QLYSCloud-delivered vulnerability management and compliance$6.5Bmarket cap
- Netskope, Inc.NTSKSecurity service edge and single-vendor SASE; IPO'd 2025$6.2Bmarket cap
- BlackBerry LimitedBBQNX embedded security and Cylance endpoint protection$5.0Bmarket cap
- Varonis Systems, Inc.VRNSData security posture management and insider-threat detection$5.0Bmarket cap
- Trend Micro Incorporated4704.TEndpoint, cloud and network security; Japan's largest vendor$4.6Bmarket cap
- Fastly, Inc.FSLYEdge delivery with web application and API protection$4.2Bmarket cap
- Tenable Holdings, Inc.TENBExposure management and vulnerability assessment$4.0Bmarket cap
- NetScout Systems, Inc.NTCTNetwork visibility, DDoS protection and packet forensics$2.8Bmarket cap
- Cellebrite DI Ltd.CLBTDigital investigations and cyber intelligence analytics$2.8Bmarket cap
- Qi An Xin Technology Group Inc.688561.SSSecurity operations, threat intelligence and endpoint for government$2.6Bmarket cap
- Venustech Group Inc.002439.SZNetwork security and managed detection for Chinese enterprises$2.4Bmarket cap
- Bittium OyjBITTI.HEEncrypted tactical communications devices and secure smartphones$1.6Bmarket cap
- secunet Security Networks AktiengesellschaftYSN.DEHigh-assurance network encryption for German public-sector$1.4Bmarket cap
- Radware Ltd.RDWRDDoS mitigation and application delivery$1.2Bmarket cap
- Topsec Technologies Group Inc.002212.SZFirewalls, gateways and government network security$1.1Bmarket cap
- NSFOCUS Technologies Group Co., Ltd.300369.SZDDoS mitigation and application security$853Mmarket cap
- Rapid7, Inc.RPDVulnerability management, detection and response$849Mmarket cap
- Mitek Systems, Inc.MITKMobile identity verification and document fraud detection$820Mmarket cap
- Tinexta S.p.A.TNXT.MIDigital trust, qualified signatures and cyber services$799Mmarket cap
- Asiainfo Security Technologies Co.,Ltd.688225.SSEndpoint and cloud workload protection for Chinese enterprises$702Mmarket cap
- Public Joint Stock Company Positive GroupPOSI.MEVulnerability management, NGFW and SIEM; Russia's largest vendor$675Mmarket cap
- Cognyte Software Ltd.CGNTInvestigative analytics and open-source intelligence$663Mmarket cap
- Surfilter Network Technology Co., Ltd.300311.SZZero-trust, border security and network audit$625Mmarket cap
- OneSpan Inc.OSPNAuthentication and anti-fraud for financial institutions$582Mmarket cap
- DBAPPSecurity Co., Ltd.688023.SSSecurity management, log analytics and network detection$575Mmarket cap
- NCC Group plcNCC.LPenetration testing, escrow and managed security services$515Mmarket cap
- GB Group plcGBG.LIdentity verification, location and fraud data$496Mmarket cap
- Hillstone Networks Co.,Ltd.688030.SSNext-generation firewalls and micro-segmentation$441Mmarket cap
- F-Secure OyjFSECURE.HEConsumer endpoint and identity protection across the Nordics$402Mmarket cap
- Allot Ltd.ALLTNetwork intelligence and security for service providers$385Mmarket cap
- Digital Arts Inc.2326.TWeb and email content filtering for Japanese enterprises and schools$375Mmarket cap
- AhnLab, Inc.053800.KQKorea's leading endpoint and network security vendor$369Mmarket cap
- Telos CorporationTLSCyber risk management and secure networks for US government$329Mmarket cap
- Beijing Infosec Technologies Co.,Ltd688201.SSPKI, cryptographic infrastructure and data encryption$329Mmarket cap
- CHT Security Co., Ltd.7765.TWTaiwan's managed security services and SOC operations$283Mmarket cap
- FFRI Security, Inc.3692.TEndpoint malware defence and security research for Japan$230Mmarket cap
- WALLIX GROUP SAALLIX.PAPrivileged access management and session monitoring$191Mmarket cap
- Clavister Holding AB (publ.)CLAV.STSwedish next-generation firewalls for OT and telecom$191Mmarket cap
- Cyber Security Cloud, Inc.4493.TCloud WAF and attack visualisation delivered as SaaS$119Mmarket cap
- Quick Heal Technologies LimitedQUICKHEAL.NSConsumer and enterprise antivirus for the Indian market$80Mmarket cap
- CSP Inc.CSPINetwork security integration and managed services$73Mmarket cap
- Intellicheck, Inc.IDNIdentity document validation and age verification$60Mmarket cap
- IGLOO Corporation067920.KQKorean SIEM and security operations platform$40Mmarket cap
- Senetas Corporation LimitedSEN.AXHigh-assurance encryption for government and defence networks$35Mmarket cap
- archTIS LimitedAR9.AXZero-trust data-centric security for classified information$17Mmarket cap
- Intrusion Inc.INTZDeception technology and network threat detection$15Mmarket cap
- Asgent, Inc.4288.TJapanese security product distribution and integration$11Mmarket cap
- FirstWave Cloud Technology LimitedFCT.AXCloud-delivered network security for Australian SMBs$9Mmarket cap
Market data from Yahoo Finance, snapshotted 2026-08-19 and converted to USD at that day's rates. Private valuations are the last publicly reported figure, dated per company — no free source publishes these, so they are maintained by hand and go stale between rounds. Funding deals from Security, Funded. Inclusion is editorial, not an endorsement.