7 VC firms investing in security & cybersecurity and insurance at the Series B stage.
F4 Fund tracks 7 VC firms that actively invest in security & cybersecurity + insurance at the Series B stage, with check sizes ranging from $500K – $50M (median: $11M – $11M). As of August 2026, and 86% lead or co-lead rounds. Rankings are based on F4's proprietary analysis of 1,644+ researched VC firms, scored by data completeness, portfolio depth, investment recency, and stage alignment.
| # | Firm | Check Size | Portfolio | Leads? | Activity | Decision | Intro |
|---|---|---|---|---|---|---|---|
| 1 | ▶ Arbor Ventures Arbor Ventures is a fintech-only fund partnering with entrepreneurs globally to shape a smarter financial future. They invest across payments, cyber, insurance, regtech, AI/ML, marketplaces, capital markets, and blockchain — taking an expansive view of fintech across geographies with no place considered too far. Singapore | $1M – $10M | 37 | Both | Active | ~2 mo | Open |
| 2 | ▶ Sony Innovation Fund Actively champion founders and entrepreneurs, fostering a culture where startups thrive, while serving as the bridge to Sony that drives deeper engagements through technical expertise and network access. Focused on DeepTech, Entertainment, EnterpriseTech, Fintech/DLT, ClimateTech, and Location-Based Entertainment. Tokyo | $500K – $20M | 147 | Follows | Active | N/A | Open |
| 3 | ▶ Dawn Capital Dawn backs category-leading B2B software companies across fintech, cybersecurity, data/AI infrastructure, insurance tech, HR tech, and regtech, acting as a long-term operating partner rather than passive capital. London | $10M – $40M | 49 | Leads | Active | N/A | N/A |
| 4 | ▶ R136 Ventures Identifies inflection points through proprietary Discovery Engine and backs founders who see opportunities others miss. Focuses on AI-driven transformation of B2B software and financial services, with deep technical due diligence analyzing 250+ data points. Woodside, CA | $2M – $20M | 42 | Both | Active | ~1 mo | Open |
| 5 | ▶ Zeev Ventures Solo GP model combining angel investing speed with VC-scale checks. Backs non-traditional founders solving their own problems. Rejects process-heavy VC bureaucracy in favor of speed, decisiveness, and founder-first engagement. Palo Alto | $20M – $50M | 23 | Leads | Active | ~1 wk | Open |
| 6 | ▶ White Star Capital Technology companies are becoming intertwined with the global economy more so than ever before. The most compelling founders build businesses through a broader world view. White Star Capital backs globally ambitious entrepreneurs at Series A, B, and Seed stages across North America, Europe, and Asia, helping them scale internationally through deep local presence on three continents. London | $1M – $25M | 45 | Leads | Active | ~1 mo | Open |
| 7 | ▶ RTP Global RTP Global is a self-funded, early-stage venture firm that recycles proceeds from prior wins (Datadog, Delivery Hero, Yandex, EPAM) to back technical, ambitious founders in AI, fintech, SaaS, developer tools, cybersecurity, e-commerce, and healthtech, with unusually flexible, long-duration capital and hands-on operator support. New York | $1M – $15M | 24 | Leads | Active | N/A | N/A |
What other stages do these firms also invest in?
Investors on this page also frequently invest in these sectors
What other sectors do these firms also invest in?
F4 Fund tracks 7 VC firms that actively invest in security & cybersecurity + insurance at the Series B stage. These firms are ranked using a composite score that weighs data completeness (30%), portfolio depth (30%), investment recency (25%), and stage alignment (15%).
Based on F4's analysis, the median check size for series b security & cybersecurity + insurance investors is $11M – $11M, with a full range from $500K – $50M. The distribution breaks down as: 2 firms in the $5M-$10M range, 5 firms in the $10M+ range.
Among the 7 firms tracked, 86% lead or co-lead rounds, and 14% typically follow. Founders seeking a lead investor should filter for firms marked "Leads" or "Both" in the rankings table above. Lead investors typically set deal terms and anchor the round.
The best series b security & cybersecurity + insurance investors combine domain expertise with an active portfolio in the space. Among these firms, 0% prefer warm introductions, and the average firm has 52 portfolio companies. Look for firms whose check size matches your raise, whose stage preference aligns with yours, and who have a track record of supporting companies in your sector through multiple growth phases.
Firm profiles are continuously updated through F4's research pipeline, which combines LLM-powered web research, portfolio analysis, and transcript extraction. The ranking data refreshes every 12 hours. Editorial analysis is reviewed weekly. Individual firm profiles are re-researched on a 30-day cycle or when new information surfaces.