33N Ventures
ABOUT 33N VENTURES
33N Ventures is a Porto-based venture capital firm focused purely on cybersecurity and infrastructure software. Its founders have invested in the sector since 2014, deploying more than €200M before formally launching 33N in 2022; the firm is now investing its €150M Fund I, writing €4M to €12M tickets at Series A and B across Europe, Israel, and the US. Across its history the team has backed 27 companies, produced three unicorns, Arctic Wolf, Feedzai, and OutSystems, and seen eight exits. Recent portfolio names include Exein, Equixly, Acoru, Panorays, StrikeReady, DataGalaxy, Codacy, Jscrambler, Probely, and IriusRisk, while Apono was acquired by 1Password for around $250M in June 2026, and earlier exits include Cellwize, Cybersixgill, and S21sec. 33N Ventures is led by managing partners Carlos Alberto Silva and Carlos Moreira da Silva, with venture partners Christophe Bianco and Guy Horowitz. The firm concentrates capital exclusively on security and infrastructure founders rather than generalist software.
INVESTMENT THESIS
Pure-play cybersecurity and infrastructure software. €4-€12M tickets at Series A and B across Europe, Israel, and the US.
INVESTMENT DETAILS
TEAM
FREQUENTLY ASKED QUESTIONS
What stage does 33N Ventures invest at?
33N Ventures invests at Early Stage, Series A+ stages.
What is 33N Ventures's typical ticket size?
33N Ventures typically writes cheques of €4–€12M.
What sectors does 33N Ventures invest in?
33N Ventures focuses on Cybersecurity, Infrastructure Software.
Where is 33N Ventures based?
33N Ventures is a VC based in Porto, Portugal, founded in 2022.
Who are the partners at 33N Ventures?
Key people at 33N Ventures include Carlos Alberto Silva (Managing Partner), Carlos Moreira da Silva (Managing Partner), Christophe Bianco (Venture Partner), Guy Horowitz (Venture Partner).
What companies has 33N Ventures invested in?
33N Ventures's portfolio includes Acoru, Apono, DataGalaxy, Equixly, Exein, Panorays, StrikeReady, Arctic Wolf, among others.
How much does 33N Ventures manage?
33N Ventures manages €150M in assets / fund commitments.
Is 33N Ventures actively investing?
€150M Fund I, deploying.
How do I contact or pitch 33N Ventures?
You can reach 33N Ventures via their website (33n.vc). You can also submit your startup through Portugal VC's pitch tool to be forwarded to matching investors.