Fundraising Fox
CyLon Ventures
Angel networkInactiveWitney · Pre-Seed–Seed · 10 people tracked
This fund appears to be inactive.
UK Companies House records show CYLON VENTURES LTD (no. 11425266) as dissolved. It is unlikely to be making new investments — this profile is kept for reference and historical accuracy.
Find your way into CyLon Ventures
Each arrow is one introduction. Sign up to fill in the first one.
Ask Ben to introduce you to Grace Cassy
You →Ben · together at ZEMU Venture Capital →Grace
Ask Jamie Chen to introduce you to Alex van Someren
You →Jamie · together at Amadeus Capital SA →Alex
Sign up to find every way you can get introduced to CyLon Ventures
- Your email: who you already know at CyLon Ventures, and who your contacts know
- 2nd- and 3rd-degree connections: people you know who worked, studied or invested with the CyLon Ventures team
- Your LinkedIn: the connections who can make the intro for you
We rank every route by how warm it is, so you raise on warm intros instead of cold emails.
Investment thesis
CyLon Ventures specializes in early-stage investing in security and resilience technology companies across Europe and beyond. The team combines national security experience with nearly a decade of work alongside enterprise security startup founders, having been the first backers of companies like Immersive Labs and Tessian. Rather than operating as a traditional VC fund, CyLon invests its own capital to stay founder-aligned, writing angel-sized cheques. It supports portfolio companies through its network and sector expertise, helping them reach early customers, connect with other investors, and build strategic relationships in a challenging sector.
Source: firm website, verified Aug 3, 2026.
Team · 10 people
from the firm's website
What they invest in
from 17 of 23 portfolio companiesCybersecurity ×14Enterprise Software ×13SaaS ×10AI & Machine Learning ×9Data & Infrastructure ×5Cloud Computing ×2Developer Tools ×2Advanced Manufacturing ×1
HQs:United States×7United Kingdom×4Netherlands×1
Who they back
founder profiles across 9 portfolio companiesFounding team size:solo founder×52 founders×34+ founders×1
Where their founders studiedfrom 13 founders with education data
Imperial College London ×3London Business School ×2
What their founders studiedfrom 13 founders with field-of-study data
Computer Science ×6Engineering ×4Business & Management ×3
Where their founders worked beforefrom 11 founders with career history
Google ×3
Investments · 23 tracked
founders shown can be your intro path
Beanstalk operates vertical farms using robotic and automated systems to grow leafy greens, herbs, root vegetables, and other produce for supply to restaurants and consumers, combining industrial robotics with horticultural science to enable local production of fresh vegetables.
Advanced ManufacturingAgTechWashington, US
Mike Ross(Founder/CEO)inJack Ross(Founder)in
Co-investorsIndustrious VenturesSnatched VenturesY CombinatorFoundation CapitalJ2 VenturesKhosla Ventures+3 more
.jpeg){kind=logo}
Beauceron Security provides anti-phishing and security awareness training software designed to reduce employee vulnerability to cyber threats.
CybersecurityEnterprise SoftwareSaaS
Co-investorsBankTech VenturesEast Valley VenturesNew Brunswick Innovation Foundation
Cado Security provides cloud-native forensics and incident response automation that captures disk-level evidence across multi-cloud environments.
Cloud ComputingCybersecurityDeveloper ToolsEnterprise Software
Co-investorsBallistic VenturesBlossom CapitalTen Eleven
CyberSmart provides cybersecurity monitoring, training, and insurance solutions designed for small and medium-sized enterprises and the organizations that serve them.
CybersecurityEnterprise SoftwareInsurTechSaaSLondon, GB
Co-investorsCambridge Angels groupEos Venture Partners LimitedIQ CapitalKickstart InnovationOxx
.jpeg){kind=logo}
Acquired by Palo Alto Networks
Dan Benjamin(Founder)in
Co-investorsFelicis VenturesSelah VenturesSignalFireAccompliceAvilaAzolla Ventures+3 more
Chattanooga, US
John Anthony Smith(Executive Officer, Director, Promoter)Michael Webb(Executive Officer)Mark Grazman(Executive Officer, Director, Promoter)
BoardZach Powell(Director)in
Co-investorsCyber Mentor FundEos Venture Partners Limited
Gisual uses data intelligence to diagnose network device issues for telecommunications companies, helping them reduce repair time and improve first-contact resolution during outages and disasters.
Data & InfrastructureEnergyEnterprise SoftwareSaaSPhiladelphia, US
Co-investorsInvariantes FundSoma CapitalThird Sphere
Hadrian offers an offensive security platform that continuously maps an organization's external attack surface, discovers assets, and uses agentic AI to validate which exposures are actually exploitable.
AI & Machine LearningCybersecurityEnterprise SoftwareSaaSAmsterdam, NL
Rogier Fischer(Co-Founder & CEO)inOlivier Beg(Co-Founder & Chief Hacking Officer)inMaurice Clin(Co-Founder & Head of Business Development)inTijl van Vliet(Co-Founder)in
Co-investorsCapitalGConstruct CapitalLux CapitalPICUS CAPITAL137 Ventures1789 Capital+7 more
Hazy provides a data-sharing platform with built-in GDPR-compliant legal agreements, access controls, and audit logs to help businesses share customer data responsibly.
AI & Machine LearningCybersecurityData & Infrastructure
Harry Keen(Founder)in
Co-investorsAlbionVCM12 (Microsoft's Venture Fund)Metis VenturesNeva Sgr.Notion CapitalUCL Technology Fund+6 more
Immersive Labs provides cybersecurity training and labs where teams practice response to emerging threats and current attacker methods.
AI & Machine LearningCybersecurityEnterprise Software
James Hadley(Founder)in
BoardJack Huffard(Chairman of the Board)in
Co-investorsInsight PartnersSummit PartnersMenlo VenturesTen Eleven
Mondoo provides vulnerability management software that uses AI agents to detect and automatically remediate security issues across IT infrastructure.
AI & Machine LearningCloud ComputingCybersecurityDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Soo Choi-Andrews(Co-Founder & CEO)inDominik Richter(Founder)in
Co-investorsAtomicofirstminute capitalHV CapitalSystem.One
.jpeg){kind=logo}
Risk Ledger builds a third-party risk management platform that connects organizations to monitor and manage cybersecurity risks in their supply chains.
CybersecurityEnterprise SoftwareSaaSLondon, GB
Haydn BrooksinDaniel Saulin
Co-investorsEpisode1Lifeline Ventures
Enrico Faccioli(Founder)in
Co-investorsAviso VenturesAxeleo CapitalOctopus VenturesOsney Capital
SenseOn provides a security operations platform that unifies existing tools (SIEM, EDR, identity, cloud) into a single investigation plane, using cross-domain correlation and AI-accelerated incident resolution under human approval.
AI & Machine LearningCybersecuritySaaSLondon, GB
David Atkinson(Founder)
Co-investorsCrane Venture PartnersForgePoint CapitalMMC VenturesTempoCapVentura CapitalEight Roads Ventures
Silent Push operates a proprietary scanning and aggregation engine that logs changes across the entire IPv4 and IPv6 space, providing security teams with pre-evaluated first-party data and query functionality to track and monitor attacker infrastructure.
CybersecurityData & InfrastructureSaaSReston, US
Kenneth Bagnall(Executive Officer, Director)Tim Dawson(Director)in
BoardDavid Palmer(Director)inFrank Verdecanna(Director)inJohn Jensen(Director)in
Co-investorsTen ElevenUncorrelated VenturesStepstone Group
Soveren provides data discovery, monitoring, and intelligence tools that help companies manage sensitive data in compliance with regulations and business rules.
CybersecurityData & InfrastructureEnterprise SoftwareSaaS
Co-investorsSemapa Next10x FoundersTrueSight Ventures
Teleskope offers a data security platform with a "Data Reasoning Layer" that discovers, classifies, and automatically remediates sensitive data exposure across an organization's environment.
AI & Machine LearningCybersecurityData & InfrastructureEnterprise SoftwareNew York, US
Elizabeth Nammour(Executive Officer, Director, Promoter)inJulie Trias(Director)
BoardBrian Schechter(Director)in
Co-investorsA'Z AngelsCorrelation VenturesLerer HippeauPrimary Venture PartnersEssence Venture CapitalM13
Tessian provides AI-powered email security solutions that detect and prevent email-based cyberattacks and data loss for enterprises.
AI & Machine LearningCybersecurityEnterprise Software
Tim Sadler(Founder & CEO)inEdward Bishop(Founder)in
Co-investorsAccelBalderton CapitalCrane Venture PartnersForgePoint CapitalLocalGlobeMarch Capital Partners+8 more
Vena Security provides an AI-powered platform that autonomously investigates, remediates, and validates closure of security exposures across vulnerabilities, misconfigurations, identity risks, and attack surface changes.
AI & Machine LearningCybersecurityEnterprise Software
Xapien is an AI-powered platform that consolidates commercial and open data to deliver risk intelligence for due diligence, serving enterprise compliance teams, financial services, legal, and educational organizations.
AI & Machine LearningEnterprise SoftwareLegalTechSaaSBoston, US
Dan SecretaninShaun O'MahonyinChris Green(CEO)in
Co-investorsDouble DownFounders FactoryFounders Factory NYYFM Equity Partners
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
BeauceronWorldrZamna
Portfolio news
latest coverage across their companiesMondoo · mondoo.com · May 31, 2026
Principals & officers · per Companies House
what is this? ⓘDirector · British · since 2018
Neil Christopher Redvers Crocker — right to appoint and remove directors
Frequently asked questions
- How many investments has CyLon Ventures made?
- CyLon Ventures has 23 tracked investments.
- What stage does CyLon Ventures invest at?
- CyLon Ventures invests at the Pre-Seed, Seed stages.
- What sectors does CyLon Ventures focus on?
- CyLon Ventures focuses on Cybersecurity, Deep Tech, Defense Tech.
- Where is CyLon Ventures located?
- CyLon Ventures is headquartered in Witney, GB.
- Does CyLon Ventures lead rounds?
- CyLon Ventures typically participates in rounds rather than leading them.
- Who does CyLon Ventures co-invest with?
- CyLon Ventures most often shares deals with Seedcamp, Eos Venture Partners Limited, ForgePoint Capital, among 59 tracked co-investors.
Images
Similar investors
DCVC (Data Collective) is a deep tech venture capital firm that backs entrepreneurs using computational approaches to solve large-scale real-world problems across many industries.
Differential Ventures is a seed-stage venture capital fund founded by data scientists and entrepreneurs to back data-focused, B2B startups working in artificial intelligence and machine learning.
Khosla Ventures is a venture capital firm that backs bold, early-stage, technology-driven companies across deep tech and other sectors, providing hands-on 'venture assistance' to help founders build category-defining businesses.
Sierra Ventures is a venture capital firm that invests in early-stage SaaS and technology startups, focusing on B2B cloud software delivered via subscription models.
Costanoa Ventures is an early-stage venture capital firm that backs a select group of founders solving hard problems, offering long-term partnership, operational expertise, and hands-on support.