60 pre-seed cybersecurity investors in the US
We list 60 pre-seed cybersecurity investors in the US as of November 2026: each has an SEC filing on file, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are New York (10), San Francisco (8) and Menlo Park (4).
Top 5 pre-seed cybersecurity investors in the US, 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 (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when pre-seed is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are 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.
Silent Ventures
Type: VC firm · HQ: Dallas, TX · Stages: Pre-seed · Focus: Cybersecurity, Defense Tech, AI, Logistics · Latest activity: New fund, Jul 2026 · Fund size on file: $85M (SEC Form D, 2025)
Latest fund filing dated Jul 2026; $85M fund on file (SEC Form D, 2025); states cybersecurity as a focus; backs pre-seed; names the US as where it invests; 1 named decision-maker on file.
Madrona
Type: VC firm · HQ: Seattle, WA · Stages: Pre-seed, Seed, Series A, Series B, Growth · Focus: Cybersecurity, AI, Biotech, Consumer · Latest activity: New deal, Oct 2026 · Fund size on file: $490M (SEC Form D, 2025)
Dated new deal in Oct 2026; $490M fund on file (SEC Form D, 2025); states cybersecurity as a focus; backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.
Leo Capital
Type: VC firm · HQ: San Francisco, CA · Stages: Pre-seed, Seed · Focus: Cybersecurity, AI, Fintech, Insurtech · Latest activity: New deal, Oct 2026 · Fund size on file: $20M (SEC Form D, 2026)
Dated new deal in Oct 2026; $20M fund on file (SEC Form D, 2026); states cybersecurity as a focus; backs pre-seed, seed; names the US as where it invests; 8 named decision-makers on file.
Joule Ventures
Type: VC firm · HQ: New York, NY · Stages: Pre-seed, Seed · Focus: Cybersecurity, AI, Fintech, B2B · Latest activity: New fund, Jun 2026 · Fund size on file: $100M (SEC Form D, 2023)
Latest fund filing dated Jun 2026; $100M fund on file (SEC Form D, 2023); states cybersecurity as a focus; backs pre-seed, seed; names the US as where it invests; 3 named decision-makers on file.
FLF Accelerate
Type: VC firm · HQ: Tampa, FL · Stages: Pre-seed, Seed, Series A, Series B · Focus: Cybersecurity, AI, Fintech, Media · Latest activity: New fund, Sep 2026 · Fund size on file: $5M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $5M fund on file (SEC Form D, 2026); states cybersecurity as a focus; backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.
First 25 of 60 pre-seed cybersecurity investors in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Silent Ventures | VC firm | Dallas, TX | Pre-seed | Cybersecurity, Defense Tech, AI, Logistics | New fund, Jul 2026 | $85M (SEC Form D, 2025) | 4 Nov 2026 | 1 name · 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 |
| Leo Capital | VC firm | San Francisco, CA | Pre-seed, Seed | Cybersecurity, AI, Fintech, Insurtech | New deal, Oct 2026 | $20M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Joule Ventures | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, AI, Fintech, B2B | New fund, Jun 2026 | $100M (SEC Form D, 2023) | 4 Nov 2026 | 3 names, firm email · 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 |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Cybersecurity, AI, Data, Logistics | New fund, May 2026 | $49M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Glasswing Ventures | VC firm | Boston, MA | Pre-seed | Cybersecurity, AI, Future of Work, Logistics | New deal, Jun 2026 | $203M (SEC Form D, 2024) | 4 Nov 2026 | 8 names, firm email · Unlock |
| White Rabbit | VC firm | San Francisco, CA | Pre-seed | Cybersecurity | New fund, Oct 2026 | $6M (SEC Form D, 2025) | 4 Nov 2026 | 2 names · Unlock |
| Scopusventures | VC firm | Los Angeles, CA | Pre-seed, Seed | Cybersecurity, AI, Edtech, Fintech | New fund, Apr 2026 | $50M (SEC Form D, 2021) | 4 Nov 2026 | 1 name, firm email · Unlock |
| Squared Circle Square Two | VC firm | Plymouth, MN | Pre-seed, Seed | Cybersecurity | New fund, Oct 2026 | $100M (SEC Form D, 2026) | 4 Nov 2026 | 1 name · 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 |
| Crystal Venture Partners | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, Insurtech, AI, Fintech | New fund, Oct 2026 | $30M (SEC Form D, 2024) | 4 Nov 2026 | 5 names, firm email · 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 |
| Script Capital | VC firm | San Francisco, CA | Pre-seed, Seed | Cybersecurity, SaaS, AI | New fund, Sep 2026 | $20M (SEC Form D, 2026) | 4 Nov 2026 | 1 name · Unlock |
| Parallel Venture Capital | VC firm | Boston, MA | Pre-seed, Seed | Cybersecurity, Defense Tech, AI, Quantum | New fund, Mar 2026 | $25M (SEC Form D, 2025) | 4 Nov 2026 | 4 names · Unlock |
| Roo Capital | VC firm | Coconut Grove, FL | Pre-seed, Seed, Series A, Growth | Cybersecurity, AI, Healthtech, Future of Work | New fund, Aug 2026 | $125M (SEC Form D, 2026) | 4 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 |
| Squadra Ventures | VC firm | Baltimore, MD | Pre-seed, Seed, Series A | Cybersecurity, Defense Tech, Generalist | New fund, Mar 2026 | $24M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Cerberus Ventures | VC firm | New York, NY | Pre-seed, Seed, Series A, Series B | Cybersecurity, AI, Industrial Tech, Quantum | New fund, Jun 2026 | $75M (SEC Form D, 2024) | 4 Nov 2026 | 8 names · Unlock |
| Decibel | VC firm | Menlo Park, CA | Pre-seed | Cybersecurity, AI, Developer Tools, SaaS | New fund, Apr 2026 | $317M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| boldstart ventures | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, AI, Developer Tools, Robotics | New deal, Jun 2026 | $250M (SEC Form D, 2024) | 5 Nov 2026 | 6 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 |
| Vine Ventures | VC firm | New York, NY | Pre-seed | Cybersecurity, AI, Fintech, Robotics | New deal, Oct 2025 | 4 Nov 2026 | 4 names · Unlock | |
| Mercury Fund | VC firm | Houston, TX | Pre-seed, Seed, Series A | Cybersecurity, AI, Healthtech, Crypto and Web3 | New deal, May 2025 | $150M (SEC Form D, 2022) | 5 Nov 2026 | 8 names, firm email · 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 |
You are seeing 25 of 60. The full list adds 35 more investors and 300 named decision-makers.
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How these 60 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 23 | 38% |
| New York | 10 | 17% |
| Texas | 5 | 8% |
| Massachusetts | 5 | 8% |
| Florida | 3 | 5% |
| Georgia | 2 | 3% |
| Colorado | 2 | 3% |
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 59 | 98% |
| Accelerator | 1 | 2% |
Method and limits
- Source
- All 60 rows carry an SEC filing (Form D or Form ADV). All 60 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 pre-seed.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (30: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (20; half of that when the sector is stated only), stage focus (15: all of it when pre-seed is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (12) and completeness of the public record (8). Stage and regional focus are 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 6 Nov 2026.
- Fill rates
- Of 60 rows: stage 60, sector 60, fund size 57, website 60. In the paid file: named decision-makers on 60 rows, firm email on 21, LinkedIn page on 31, check size on 9.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many pre-seed cybersecurity investors in the US are there?
We list 60 as of November 2026. 41 of the 60 have a fund filing or a dated deal in the last 12 months. The cities with the most are New York (10), San Francisco (8) and Menlo Park (4).
Which pre-seed cybersecurity investors in the US raised a new fund in the last 12 months?
33 of the 60 have a fund filing dated in the last 12 months. The most recent on this list are Squared Circle Square Two (Oct 2026), Crystal Venture Partners (Oct 2026) and White Rabbit (Oct 2026).
What is the typical fund size of pre-seed cybersecurity investors in the US?
The median fund size on file for this list is $54M, across the 54 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 6 do not disclose a size there.
How do I contact pre-seed cybersecurity investors in the US?
The paid file holds 300 named decision-makers across 60 of these 60 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 pre-seed cybersecurity investors in the US come from?
All 60 rows have an SEC filing on file (Form D or Form ADV). 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 6 Nov 2026 at the latest. The whole file is re-verified twice a year.
Broader lists
Cybersecurity venture capital firms in the US (214)Pre-seed investors in the US (549)Pre-seed cybersecurity investors (90)
Related lists
Pre-seed AI investors in the US (403)Pre-seed SaaS investors in the US (367)Pre-seed healthtech investors in the US (225)Pre-seed fintech investors in the US (187)Seed cybersecurity investors in the US (134)Pre-seed deep tech investors in the US (114)Pre-seed consumer investors in the US (104)Pre-seed medtech investors in the US (95)Pre-seed hardware investors in the US (95)Pre-seed B2B investors in the US (86)Pre-seed climate tech investors in the US (84)Pre-seed biotech investors in the US (81)Pre-seed industrial tech investors in the US (79)Pre-seed robotics investors in the US (76)Pre-seed energy investors in the US (73)Pre-seed developer tools investors in the US (67)Series A cybersecurity investors in the US (64)Growth-stage cybersecurity investors in the US (55)
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