Top list · Worldwide

Cybersecurity startups founded in 2021

92 cybersecurity startups founded in 2021 have raised money in rounds we track. These are the 50 that have raised the most, $3.3B between them, with the United States the most common home.

$3.3Braised by these 50
92on our record in all
United Statesmost common home
Chainguardraised the most
  1. 1ChainguardChainguard is a cybersecurity company founded in 2021, focused on software supply chain security.

    Chainguard is a cybersecurity company founded in 2021, focused on software supply chain security.

    Founded 2021Kirkland, United States$776Mlast round Oct 2025
  2. 2QuantinuumQuantinuum accelerates quantum computing and the development of applications across chemistry, cybersecurity, finance, and optimization.

    Quantinuum accelerates quantum computing and the development of applications across chemistry, cybersecurity, finance, and optimization.

    Founded 2021Broomfield, United States$700Mlast round Sept 2026
  3. 3FidiumFidium was developed to defy consumer expectations of network and internet service providers.

    Fidium was developed to defy consumer expectations of network and internet service providers.

    Founded 2021Mattoon, United States$665Mlast round Mar 2026
  4. 4EnigmaWe are an open platform with blockchain-based technology and simple tools for artists and creators to grow alongside fans, investors and the entertainment indus

    We are an open platform with blockchain-based technology and simple tools for artists and creators to grow alongside fans, investors and the entertainment indus

    Founded 2021Saint Petersburg, United States$166Mlast round Jul 2026
  5. 5Defense UnicornsDefense Unicorns is a veteran-owned defense technology company founded in 2021, with roots tracing back to late 2020.

    Defense Unicorns is a veteran-owned defense technology company founded in 2021, with roots tracing back to late 2020.

    Founded 2021Colorado Springs, United States$136Mlast round Jan 2026
  6. 6Talon Cyber SecurityTalon Cyber Security provides cybersecurity solutions for the distributed workforce.

    Talon Cyber Security provides cybersecurity solutions for the distributed workforce.

    Founded 2021Tel Aviv$100Mlast round Aug 2022
  7. 7Endor LabsEndor Labs is a cybersecurity company focused on Agentic Application Security and Software Supply Chain Security.

    Endor Labs is a cybersecurity company focused on Agentic Application Security and Software Supply Chain Security.

    Founded 2021Palo Alto, United States$93Mlast round Apr 2025
  8. 8Reach SecurityReach Security is an AI-native cybersecurity company founded in 2021, focused on helping organizations identify and address hidden risks that traditional securi

    Reach Security is an AI-native cybersecurity company founded in 2021, focused on helping organizations identify and address hidden risks that traditional securi

    Founded 2021San Francisco, United States$60Mlast round Oct 2026
  9. 9Ox SecurityOx Security is the first end-to-end security solution to prevent attacks across your software.

    Ox Security is the first end-to-end security solution to prevent attacks across your software.

    Founded 2021Tel Aviv, United States$60Mlast round May 2025
  10. 10DazzDazz delivers unified security remediation across code, clouds, infrastructure, and applications for security and development teams.

    Dazz delivers unified security remediation across code, clouds, infrastructure, and applications for security and development teams.

    Founded 2021Palo Alto, United States$50Mlast round Jul 2024
  11. 11SecureKeySecureKey Electronic appliances manufacturing company.

    SecureKey Electronic appliances manufacturing company.

    Founded 2021Canada$47Mlast round Oct 2016
  12. 12AponoApono helps companies become secure and compliant while maintaining their productivity and agility.

    Apono helps companies become secure and compliant while maintaining their productivity and agility.

    Founded 2021New York, United States$34Mlast round Nov 2025
  13. 13RADICL DefenseWe secure small and medium sized businesses from nation state level cyberthreats.

    We secure small and medium sized businesses from nation state level cyberthreats.

    Founded 2021United States$31Mlast round Feb 2026
  14. 14Push SecurityPush Security is a cybersecurity company focused on browser-based identity threat detection and response (ITDR).

    Push Security is a cybersecurity company focused on browser-based identity threat detection and response (ITDR).

    Founded 2021Peabody, United States$30Mlast round Apr 2025
  15. 15HyporiHypori is an enterprise software company based in Reston, Virginia, with a technology hub in Austin, Texas.

    Hypori is an enterprise software company based in Reston, Virginia, with a technology hub in Austin, Texas.

    Founded 2021Reston, United States$26Mlast round Jan 2025
  16. 16Truffle SecurityTruffle Security is an open source cybersecurity company that offers solutions for finding and remediating leaked software credentials.

    Truffle Security is an open source cybersecurity company that offers solutions for finding and remediating leaked software credentials.

    Founded 2021San Francisco, United States$25Mlast round Nov 2025
  17. 17AembitAembit is a cybersecurity company founded in 2021 and headquartered in Silver Spring, Maryland.

    Aembit is a cybersecurity company founded in 2021 and headquartered in Silver Spring, Maryland.

    Founded 2021Silver Spring, United States$25Mlast round Jul 2024
  18. 18Valence SecurityValence Security is a cybersecurity company founded in 2021 and based in Tel Aviv, Israel, with additional operations in South San Francisco and New York.

    Valence Security is a cybersecurity company founded in 2021 and based in Tel Aviv, Israel, with additional operations in South San Francisco and New York.

    Founded 2021New York, United States$25Mlast round Oct 2022
  19. 19NiobiumNiobium is a private computer hardware and semiconductors company located in Dayton, Ohio, founded in 2021.

    Niobium is a private computer hardware and semiconductors company located in Dayton, Ohio, founded in 2021.

    Founded 2021Dayton, United States$23Mlast round Dec 2025
  20. 20ConveyorConveyor is a software company based in San Francisco, founded in 2021.

    Conveyor is a software company based in San Francisco, founded in 2021.

    Founded 2021San Francisco, United States$20Mlast round Jun 2025
  21. 21watchTowrwatchTowr is a global cybersecurity technology company founded in 2021 and headquartered in Singapore, with additional offices in New York and London.

    watchTowr is a global cybersecurity technology company founded in 2021 and headquartered in Singapore, with additional offices in New York and London.

    Founded 2021Singapore, United Kingdom$19Mlast round Oct 2024
  22. 22SitehopSitehop develops cutting-edge networking and cyber-security solutions.

    Sitehop develops cutting-edge networking and cyber-security solutions.

    Founded 2021Sheffield, United Kingdom$18Mlast round Oct 2025
  23. 23TrustmiTrustmi is a SaaS behavioral AI platform focused on eliminating B2B payment fraud and costly errors.

    Trustmi is a SaaS behavioral AI platform focused on eliminating B2B payment fraud and costly errors.

    Founded 2021New York, United States$17Mlast round Jul 2023
  24. 24dope.securitydope.security is an American enterprise cybersecurity company founded in 2021 and headquartered in Mountain View, California, with operations in Cork, Ireland.

    dope.security is an American enterprise cybersecurity company founded in 2021 and headquartered in Mountain View, California, with operations in Cork, Ireland.

    Founded 2021Mountain View, United States$16Mlast round Mar 2023
  25. 25Radiant SecurityRadiant Security is an autonomous MDR that automates security operations using machine learning and AI.

    Radiant Security is an autonomous MDR that automates security operations using machine learning and AI.

    Founded 2021San Francisco, United States$15Mlast round Nov 2023
  26. 26Saibo KunlunSaibo Kunlun is a cyber security service provider that focuses on software, system security, and cloud security.

    Saibo Kunlun is a cyber security service provider that focuses on software, system security, and cloud security.

    Founded 2021Beijing$14Mlast round Jul 2023
  27. 27BaobabBaobab Risk Solutions (BRS) is a prominent European provider of digital risk protection, based in Berlin, Germany.

    Baobab Risk Solutions (BRS) is a prominent European provider of digital risk protection, based in Berlin, Germany.

    Founded 2021Berlin, Germany$14Mlast round Jun 2025
  28. 28DattakDattak is a Paris-based insurtech company founded in 2021 that specializes in technology risk management.

    Dattak is a Paris-based insurtech company founded in 2021 that specializes in technology risk management.

    Founded 2021Paris, France$12Mlast round Aug 2023
  29. 29Impart SecurityImpart Security is a complete API security platform designed to enable security and development teams to protect their APIs.

    Impart Security is a complete API security platform designed to enable security and development teams to protect their APIs.

    Founded 2021San Francisco, United States$12Mlast round Jun 2025
  30. 30WISeSAT.SPACEWISeSat.Space is a satellite-technology company specializing in secure space-based IoT connectivity and trusted communications.

    WISeSat.Space is a satellite-technology company specializing in secure space-based IoT connectivity and trusted communications.

    Founded 2021Meyrin, Switzerland$10Mlast round Jun 2025
  31. 31MirrorTabMirrorTab is a cybersecurity company based in San Francisco, founded in 2021.

    MirrorTab is a cybersecurity company based in San Francisco, founded in 2021.

    Founded 2021San Francisco, United States$8.5Mlast round Feb 2025
  32. 32SaporoSaporo is a Swiss cybersecurity company founded in 2021 and based in Lausanne.

    Saporo is a Swiss cybersecurity company founded in 2021 and based in Lausanne.

    Founded 2021Lausanne, Switzerland$8.1Mlast round Nov 2025
  33. 33TromzoTromzo is a developer-first Application Security Posture Management (ASPM) platform that enhances the remediation of security risks from code to cloud.

    Tromzo is a developer-first Application Security Posture Management (ASPM) platform that enhances the remediation of security risks from code to cloud.

    Founded 2021Mountain View, United States$8.0Mlast round Aug 2023
  34. 34DarwiniumDarwinium is an AI-powered digital security and fraud prevention company based in San Francisco, with additional offices in Sydney and London.

    Darwinium is an AI-powered digital security and fraud prevention company based in San Francisco, with additional offices in Sydney and London.

    Founded 2021San Francisco, United States$7.0Mlast round Feb 2026
  35. 35Ecole 2600Ecole 2600 is a French cybersecurity school located in Montigny-le-Bretonneux, dedicated to training experts in digital system protection.

    Ecole 2600 is a French cybersecurity school located in Montigny-le-Bretonneux, dedicated to training experts in digital system protection.

    Founded 2021Montigny-le-Bretonneux, France$6.5Mlast round Apr 2023
  36. 36CYB3R OPERATIONSCYB3R Operations is a London-based cybersecurity startup founded in 2021.

    CYB3R Operations is a London-based cybersecurity startup founded in 2021.

    Founded 2021London, United Kingdom$6.0Mlast round Jan 2026
  37. 37CrosswireCrosswire is a New York-based company specializing in enterprise security and identity management.

    Crosswire is a New York-based company specializing in enterprise security and identity management.

    Founded 2021New York, United States$6.0Mlast round Dec 2021
  38. 38Phin SecurityPhin provides social engineering simulation across all communication channels and delivers training to employees .

    Phin provides social engineering simulation across all communication channels and delivers training to employees .

    Founded 2021United States$6.0Mlast round Apr 2026
  39. 39MoxsoMoxso is an AI-driven cybersecurity training company based in Copenhagen, Denmark, founded in 2021.

    Moxso is an AI-driven cybersecurity training company based in Copenhagen, Denmark, founded in 2021.

    Founded 2021Kobenhavn, Denmark$5.5Mlast round Aug 2025
  40. 40FleakFleak is a software development company based in San Jose, California, founded in 2024.

    Fleak is a software development company based in San Jose, California, founded in 2024.

    Founded 2021San Jose, United States$5.0Mlast round Oct 2024
  41. 41RiPSIM TechnologiesRiPSIM Technologies is a U.S.-based software company specializing in eSIM-as-a-service and comprehensive eSIM lifecycle management.

    RiPSIM Technologies is a U.S.-based software company specializing in eSIM-as-a-service and comprehensive eSIM lifecycle management.

    Founded 2021Ashburn, United States$5.0Mlast round Oct 2025
  42. 42PatchstackPatchstack is an Estonian cybersecurity startup focused on open-source security intelligence, particularly within the WordPress ecosystem.

    Patchstack is an Estonian cybersecurity startup focused on open-source security intelligence, particularly within the WordPress ecosystem.

    Founded 2021Paernu, United Kingdom$5.0Mlast round Sept 2024
  43. 43XygeniXygeni is a platform focused on Application Security Posture Management (ASPM) and Software Supply Chain Security, designed to secure the entire software develo

    Xygeni is a platform focused on Application Security Posture Management (ASPM) and Software Supply Chain Security, designed to secure the entire software develo

    Founded 2021Majadahonda, Spain$4.4Mlast round Jun 2023
  44. 44HandwaveHandwave is a Latvian deeptech fintech startup based in Riga, founded in 2021 or 2022.

    Handwave is a Latvian deeptech fintech startup based in Riga, founded in 2021 or 2022.

    Founded 2021Latvia$4.2Mlast round Aug 2025
  45. 45VerosintReal-time Account Fraud Detection & Prevention Platform

    Real-time Account Fraud Detection & Prevention Platform

    Founded 2021Austin, United States$4.0Mlast round Oct 2023
  46. 46XentraXentra is a UK-based digital security company that specializes in subscription-led cyber security, compliance, and managed IT security services.

    Xentra is a UK-based digital security company that specializes in subscription-led cyber security, compliance, and managed IT security services.

    Founded 2021Leeds, United Kingdom$3.6Mlast round Jul 2026
  47. 47AceissThe risk of unauthorized access is a real and growing threat for everyone.

    The risk of unauthorized access is a real and growing threat for everyone.

    Founded 2021New Canaan, United States$3.3Mlast round Aug 2022
  48. 48PingSafePingSafe is a cloud security platform that provides protection against vulnerabilities that traditional security solutions may miss.

    PingSafe is a cloud security platform that provides protection against vulnerabilities that traditional security solutions may miss.

    Founded 2021San Francisco, United States$3.3Mlast round Jul 2023
  49. 49EnveedoEnveedo is a Cyber Risk Management Platform founded in 2021 and based in Miami, Florida.

    Enveedo is a Cyber Risk Management Platform founded in 2021 and based in Miami, Florida.

    Founded 2021Miami, United States$3.1Mlast round Mar 2024
  50. 50Common FateCommon Fate is an identity security and cloud access management company focused on protecting sensitive digital assets.

    Common Fate is an identity security and cloud access management company focused on protecting sensitive digital assets.

    Founded 2021Perth, Australia$3.1Mlast round Dec 2022
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies founded in 2021 whose funding rounds we classed in this sector, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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