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OnSecurity

United Kingdom

OnSecurity provides AI-augmented penetration testing services

Cybersecurity

OnSecurity, based in United Kingdom, has 2 investors on file, among them Gresham House Ventures and Osney Capital. Its latest round on record is Series A, 11 May 2026. Its site was last checked 6 Nov 2026: site answers.

onsecurity.io

Funding

1 round on record
Latest roundSeries A11 May 2026
Since that round6 monthsno later round on record
May 2026Series AInvestors not named

Round sizes and total raised are on Fundup AI, our sister product for funding data.

Investors

2 investors on file
InvestorEvidenceType
Gresham House VenturesPortfolio pageVenture capital
Osney CapitalPortfolio pageVenture capital

More from Gresham House Ventures

73 companies on its checked portfolio

Its portfolio leans to Healthcare & Biotech (16%), Fintech (13%), E-commerce & Marketplaces (10%).

Accredit SolutionsAccredit Solutions transforms how organisations manage access, identit…SecureCloud+SecureCloud+ provides technology for secure government and the defence…01Health01Health provides a platform to launch and scale specialist care deliv…CognassistCognassist provides a platform for assessing and supporting learners, …Eque2Eque2 provides construction management software

See Gresham House Ventures' full profile · Who invests alongside it

More from Osney Capital

17 companies on its checked portfolio

Its portfolio leans to Cybersecurity (59%), AI & Machine Learning (14%), Enterprise Software (14%).

AisyAisy investigates every ticket to learn how a company works and provid…CodeWallCodeWall provides autonomous attack agents for continuous and controll…MindgardMindgard provides AI security solutions, including red teaming and vul…OsspreyOssprey detects and prevents malicious code and supply chain threats i…OvermindThe company provides a service to help engineers see the impact of the…

See Osney Capital's full profile · Who invests alongside it

A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data

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VCinfo API
$ curl -H "X-API-Key: YOUR_KEY" \
  https://api.vcinfo.io/v1/companies/onsecurity.io/investors

# also
GET /v1/companies/onsecurity.io
GET /v1/companies/onsecurity.io/news
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