Investors / United Kingdom / CyLon Ventures
CyLon Ventures
Investor · Witney, United Kingdom · Europe
CyLon Ventures invests its own capital in early-stage security and resilience startups. It previously ran cyber security accelerator programmes in Europe, Asia and the Middle East until 2020.
Invests inCybersecurityAI & Machine Learning
In its own wordscybersecuritysecurityresilienceidentity managementthreat intelligenceenterprise security
Your fit with CyLon Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsCyLon Ventures lists 18 checked portfolio companies on its own site. Its largest themes are Cybersecurity (45%), AI & Machine Learning (29%) and Enterprise Software (7%). 58% of its companies are based in United Kingdom. It invests most often alongside Seedcamp, Crane Venture Partners and Eos Ventures.
No funding round on record names CyLon Ventures yet, so the figures come from its portfolio page.
Round figures show recent activity, not CyLon Ventures' whole history. Rounds on record name 0 companies; its own site lists 18. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Cybersecurity | 45% | 4% |
| AI & Machine Learning | 29% | 18% |
| Enterprise Software | 7% | 8% |
| Fintech | 7% | 12% |
| Industrial & Manufacturing | 3% | 7% |
| Education | 3% | 7% |
| Legal & Compliance | 3% | 2% |
| E-commerce & Marketplaces | 3% | 6% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Seedcamp | 3 |
| Crane Venture Partners | 2 |
| Eos Ventures | 2 |
| ForgePoint Capital | 2 |
| HV Capital | 2 |
| LocalGlobe | 2 |
| TempoCap | 2 |
| ACT Venture Partners | 1 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 46th | 18 companies |
| Recent activity | 46th | 0 rounds in 12 months |
| Early stage | 54th | 0% of entries at pre-seed or seed |
| Evidence | 52th | 0% of companies confirmed by a round |
| Sector focus | 80th | 45% in its largest sector |
| Reach | 58th | 3 countries |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers1689%
- No longer answers00%
- Points to another company211%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare CyLon Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Portfolio
18 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| Advai helps companies choose the right AI model, test for production readiness, and monitor real-world behavior with confidence. | AI & Machine LearningCybersecurity | Portfolio page | ||
| Beauceron motivates employees to retain and apply safe online behaviors through its security culture and behavior change platform. | Cybersecurity | Portfolio page | ||
| CyberSmart provides cyber security products and services for SMEs | CybersecurityEducation | Portfolio page | ||
| Portfolio page | ||||
| Gisual provides an API for real-time power outage insights and automated triage of power outage issues | Industrial & ManufacturingEnterprise Software | Portfolio page | ||
| Hadrian provides a platform for continuous external exposure management and on-demand agentic pentesting to help companies manage their attack surface | CybersecurityAI & Machine Learning | Portfolio page | ||
| DomainAgents connects buyers and sellers of domain names and facilitates negotiations and transactions. | E-commerce & MarketplacesCybersecurity | Portfolio page | ||
| Immersive Labs helps organizations prove their people, AI agents, and leadership decisions are ready for a world where AI is used inside the business and against it. | CybersecurityAI & Machine Learning | Portfolio page | ||
| Mondoo provides a platform for agentic remediation to find, prioritize and fix vulnerabilities and misconfigurations across various systems | CybersecurityAI & Machine Learning | Portfolio page | ||
| Risk Ledger transforms Third-Party Risk Management with continuous, collective supply chain defence | CybersecurityFintech | Portfolio page | ||
| SenseOn provides a security operations platform that connects and analyzes security signals from various tools to help teams make informed decisions and respond to threats. | CybersecurityAI & Machine Learning | Portfolio page | ||
| The company provides a cyber defense platform to help security teams uncover and prevent hidden threats. | Cybersecurity | Portfolio page | ||
| Soveren provides real-time data observability and controls in production by combining at-rest data detection with network traffic analysis | CybersecurityEnterprise Software | Portfolio page | ||
| Teleskope provides automated data security for the AI world | AI & Machine LearningCybersecurity | Portfolio page | ||
| Tessian, now part of Proofpoint, provides email and data security products and solutions to protect against threats and data loss. | CybersecurityAI & Machine Learning | Portfolio page | ||
Cybersecurity | Portfolio page | |||
| Xapien provides an AI-powered due diligence platform for companies to conduct risk research on third parties. | Legal & ComplianceFintech | Portfolio page | ||
| Zamna clears passengers' travel documents before they fly and takes on the liability if a government fine follows | AI & Machine LearningAI & Machine Learning | Portfolio page |
About this data
site last read 5 Nov 2026- Site
- cylonventures.com
- Last read
- 5 Nov 2026
- Watching since
- 6 Nov 2026
- Companies checked
- 18
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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