65 Series B cybersecurity investors
We list 65 Series B cybersecurity investors as of November 2026: 35 have an SEC filing on file and 30 were checked on the firm's own website or an official register, and the list was last checked on 9 Nov 2026. The states with the most are California (10), New York (7) and Florida (4).
Top 5 Series B cybersecurity investors, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stage focus (15: all of it when Series B is the only stage the firm states, split evenly when it states more), size of the fund on file on a log scale (15) and completeness of the public record (10). Stage focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
Alpha Partners
Type: VC firm · HQ: New York, NY · Stages: Series B, Growth · Focus: Cybersecurity, AI, Developer Tools, Healthtech · Latest activity: New fund, Oct 2026 · Fund size on file: $200M (SEC Form D, 2024)
Latest fund filing dated Oct 2026; $200M fund on file (SEC Form D, 2024); states cybersecurity as a focus; backs Series B, growth-stage; 8 named decision-makers on file.
DTCP
Type: VC firm · HQ: Hamburg, Germany · Stages: Series A, Series B, Growth · Focus: Cybersecurity, SaaS, AI, Defense Tech · Latest activity: New fund, Sep 2026 · Fund size or assets: €3.5B (own site)
Latest fund filing dated Sep 2026; €3.5B on file (own site); states cybersecurity as a focus; backs Series A, Series B, growth-stage; 5 named decision-makers on file.
eCAPITAL
Type: VC firm · HQ: Münster, Germany · Stages: Seed, Series A, Series B · Focus: Cybersecurity, Deep Tech, Climate Tech, AI · Latest activity: Portfolio news, Sep 2026 · Fund size or assets: €400M (own site)
Portfolio news dated Sep 2026; €400M on file (own site); states cybersecurity as a focus; backs seed, Series A, Series B; 5 named decision-makers on file.
Endeit Capital
Type: VC firm · HQ: Amsterdam, Netherlands · Stages: Series A, Series B, Growth · Focus: Cybersecurity, Fintech, Climate Tech, AI · Latest activity: New deal, Oct 2026 · Fund size or assets: €430M (own site)
Dated new deal in Oct 2026; €430M on file (own site); states cybersecurity as a focus; backs Series A, Series B, growth-stage; 3 named decision-makers on file.
Energy Impact Partners
Type: VC firm · HQ: United States (London office) · Stages: Seed, Series A, Series B, Growth · Focus: Cybersecurity, Energy, Climate Tech, AI · Latest activity: Portfolio news, Nov 2026 · Fund size or assets: $4.5B (own site)
Portfolio news dated Nov 2026; $4.5B on file (own site); states cybersecurity as a focus; backs seed, Series A, Series B; 8 named decision-makers on file.
First 25 of 65 Series B cybersecurity investors
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Alpha Partners | VC firm | New York, NY | Series B, Growth | Cybersecurity, AI, Developer Tools, Healthtech | New fund, Oct 2026 | $200M (SEC Form D, 2024) | 4 Nov 2026 | 8 names, firm email · Unlock |
| DTCP | VC firm | Hamburg, Germany | Series A, Series B, Growth | Cybersecurity, SaaS, AI, Defense Tech | New fund, Sep 2026 | €3.5B (own site) | 7 Nov 2026 | 5 names · Unlock |
| eCAPITAL | VC firm | Münster, Germany | Seed, Series A, Series B | Cybersecurity, Deep Tech, Climate Tech, AI | Portfolio news, Sep 2026 | €400M (own site) | 7 Nov 2026 | 5 names · Unlock |
| Endeit Capital | VC firm | Amsterdam, Netherlands | Series A, Series B, Growth | Cybersecurity, Fintech, Climate Tech, AI | New deal, Oct 2026 | €430M (own site) | 7 Nov 2026 | 3 names, firm email · Unlock |
| Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Cybersecurity, Energy, Climate Tech, AI | Portfolio news, Nov 2026 | $4.5B (own site) | 5 Nov 2026 | 8 names · Unlock |
| Evolution | VC firm | New York, NY | Seed, Series A, Series B, Growth | Cybersecurity, AI, Developer Tools, SaaS | New fund, Sep 2026 | $1.2B (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Tribe Capital | VC firm | San Mateo, CA | Seed, Series A, Series B, Growth | Cybersecurity, AI, Crypto and Web3, Generalist | New fund, Oct 2026 | $500M (SEC Form D, 2021) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Kibo Ventures | VC firm | Spain | Seed, Series A, Series B | Cybersecurity, Generalist, SaaS, Healthtech | New fund, Oct 2026 | €500M (own site) | 7 Nov 2026 | 5 names · Unlock |
| Menlo Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Media, Robotics | New fund, Sep 2026 | $800M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| SYN Ventures | VC firm | West Palm Beach, FL | Seed, Series A, Series B | Cybersecurity, AI, Defense Tech, Industrial Tech | New fund, Oct 2026 | $300M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| Translink Capital | VC firm | Palo Alto, CA | Seed, Series A, Series B | Cybersecurity, AI, Developer Tools, Mobility | New fund, Sep 2026 | $174M (SEC Form D, 2021) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Axeleo Capital | VC firm | Paris, France | Pre-seed, Seed, Series A, Series B | Cybersecurity, SaaS, B2B, AI | Portfolio news, Oct 2026 | €300M (own site) | 7 Nov 2026 | 5 names, firm email · Unlock |
| MiddleGame Ventures | VC firm | Luxembourg, Luxembourg | Pre-seed, Seed, Series A, Series B | Cybersecurity, Fintech, AI, Deep Tech | New deal, Sep 2026 | €300M (own site) | 7 Nov 2026 | 5 names, firm email · Unlock |
| Madrona | VC firm | Seattle, WA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Biotech, Consumer | New deal, Oct 2026 | $490M (SEC Form D, 2025) | 5 Nov 2026 | 8 names · Unlock |
| C4 Ventures | VC firm | France | Seed, Series A, Series B | Cybersecurity, Deep Tech, AI, Robotics | Portfolio news, Sep 2026 | €90M (own site) | 7 Nov 2026 | 5 names · Unlock |
| Dallas Venture Capital I DVC | VC firm | Irving, TX | Seed, Series A, Series B | Cybersecurity, AI, Fintech, Data | New deal, Oct 2026 | $75M (SEC Form D, 2021) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Variant | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, Fintech, AI, Crypto and Web3 | New fund, Sep 2026 | $250M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| Atlas Ventures | VC firm | Chicago, IL | Seed, Series A, Series B | Cybersecurity, Logistics, AI, Industrial Tech | New fund, Sep 2026 | $23M (SEC Form D, 2026) | 4 Nov 2026 | 3 names · Unlock |
| SaaS Ventures | VC firm | Coral Gables, FL | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, B2B, AI, SaaS | New fund, Sep 2026 | $50M (SEC Form D, 2021) | 4 Nov 2026 | 5 names · Unlock |
| Ansa | VC firm | New York, NY | Series A, Series B, Growth | Cybersecurity, AI, Healthtech, Media | New fund, May 2026 | $200M (SEC Form D, 2026) | 4 Nov 2026 | 4 names, firm email · Unlock |
| SignalFire | VC firm | San Francisco, CA | Seed, Series A, Series B, Growth | Cybersecurity, AI, Healthtech, Developer Tools | New fund, May 2026 | $357M (SEC Form D, 2021) | 4 Nov 2026 | 8 names · Unlock |
| Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | Cybersecurity, AI, Energy, Industrial Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Theory Ventures | VC firm | Portola Valley, CA | Pre-seed, Seed, Series A, Series B | Cybersecurity, AI, Data, Developer Tools | New deal, Jul 2026 | $450M (SEC Form D, 2024) | 5 Nov 2026 | 8 names · Unlock |
| FLF Accelerate | VC firm | Tampa, FL | Pre-seed, Seed, Series A, Series B | Cybersecurity, AI, Fintech, Media | New fund, Sep 2026 | $5M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Orange Ventures | Corporate VC | France | Seed, Series B, Growth | Cybersecurity, AI, SaaS, B2B | New deal, Sep 2026 | 9 Nov 2026 | 5 names · Unlock |
You are seeing 25 of 65. The full list adds 40 more investors and 359 named decision-makers.
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How these 65 break down
By region
| Region | On this list | Share |
|---|---|---|
| United States | 37 | 57% |
| United Kingdom | 5 | 8% |
| Europe | 23 | 35% |
By US state
| US state | On this list | Share |
|---|---|---|
| California | 10 | 15% |
| New York | 7 | 11% |
| Florida | 4 | 6% |
| Colorado | 2 | 3% |
By European country
| European country | On this list | Share |
|---|---|---|
| France | 12 | 18% |
| Germany | 3 | 5% |
| Luxembourg | 3 | 5% |
| Netherlands | 2 | 3% |
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 55 | 85% |
| Corporate VC | 7 | 11% |
Method and limits
- Source
- 35 of the 65 rows carry an SEC filing (Form D or Form ADV). All 65 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule
- Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Sector: the firm states cybersecurity as a focus on its own site, or we observed it in the firm's portfolio. Stage: the firm states that it invests at Series B.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), stage focus (15: all of it when Series B is the only stage the firm states, split evenly when it states more), size of the fund on file on a log scale (15) and completeness of the public record (10). Stage focus is our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 9 Nov 2026.
- Fill rates
- Of 65 rows: stage 65, sector 65, fund size 46, website 65. In the paid file: named decision-makers on 62 rows, firm email on 21, LinkedIn page on 45, check size on 18.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many Series B cybersecurity investors are there?
We list 65 as of November 2026. 42 of the 65 have a fund filing or a dated deal in the last 12 months.
Which Series B cybersecurity investors raised a new fund in the last 12 months?
22 of the 65 have a fund filing dated in the last 12 months. The most recent on this list are Bessemer Venture Partners (Oct 2026), Alpha Partners (Oct 2026) and SYN Ventures (Oct 2026).
What is the typical fund size of Series B cybersecurity investors?
The median fund size on file for this list is $200M, across the 28 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 37 do not disclose a size there.
How do I contact Series B cybersecurity investors?
The paid file holds 359 named decision-makers across 62 of these 65 and a firm email for 21. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.
Where does the data on Series B cybersecurity investors come from?
35 of the 65 rows have an SEC filing on file (Form D or Form ADV) and 30 were checked on the firm's own website or an official register. Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 9 Nov 2026 at the latest. The whole file is re-verified twice a year.
Narrower lists
Related lists
Seed cybersecurity investors (205)Series B AI investors (204)Series B SaaS investors (196)Series B healthtech investors (160)Series B fintech investors (127)Series A cybersecurity investors (118)Series B deep tech investors (113)Series B climate tech investors (98)Growth-stage cybersecurity investors (92)Pre-seed cybersecurity investors (90)Series B biotech investors (73)Series B consumer investors (59)Series B medtech investors (57)Series B energy investors (55)Series B B2B investors (46)Series B industrial tech investors (40)Series B mobility investors (39)Series B hardware investors (34)
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