---
title: "60 Pre-seed Cybersecurity Investors in the US (Nov 2026)"
last_updated: "2026-11-06"
rows: "60"
free_rows: "25"
source: "SEC filings"
canonical: "https://theinvestordatabase.com/lists/pre-seed-cybersecurity-investors-us/"
---

# 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).

- 60 investors
- 41 with a fund filing or dated deal in the last 12 months
- $54M median fund size on file (SEC Form D, 54 firms)
- 300 named decision-makers on file

## First 25 of 60 pre-seed cybersecurity investors in the US

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Silent Ventures | VC firm | Dallas, TX | Pre-seed | Cybersecurity, Defense Tech, AI, Logistics | New fund, Jul 2026 | $85M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/silent-ventures/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/madrona/ |
| Leo Capital | VC firm | San Francisco, CA | Pre-seed, Seed | Cybersecurity, AI, Fintech, Insurtech | New deal, Oct 2026 | $20M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/leo-capital/ |
| Joule Ventures | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, AI, Fintech, B2B | New fund, Jun 2026 | $100M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/joule-ventures/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/flf-accelerate/ |
| Techsquare Ventures | VC firm | Atlanta, GA | Pre-seed, Seed, Series A | Cybersecurity, AI, Data, Logistics | New fund, May 2026 | $49M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/techsquare-ventures/ |
| Glasswing Ventures | VC firm | Boston, MA | Pre-seed | Cybersecurity, AI, Future of Work, Logistics | New deal, Jun 2026 | $203M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/glasswing-ventures/ |
| White Rabbit | VC firm | San Francisco, CA | Pre-seed | Cybersecurity | New fund, Oct 2026 | $6M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/white-rabbit/ |
| Scopusventures | VC firm | Los Angeles, CA | Pre-seed, Seed | Cybersecurity, AI, Edtech, Fintech | New fund, Apr 2026 | $50M (SEC Form D, 2021) | 2026-11-04 | https://theinvestordatabase.com/investors/scopusventures/ |
| Squared Circle Square Two | VC firm | Plymouth, MN | Pre-seed, Seed | Cybersecurity | New fund, Oct 2026 | $100M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/squared-circle-square-two/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/menlo-ventures/ |
| Crystal Venture Partners | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, Insurtech, AI, Fintech | New fund, Oct 2026 | $30M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/crystal-venture-partners/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ |
| Script Capital | VC firm | San Francisco, CA | Pre-seed, Seed | Cybersecurity, SaaS, AI | New fund, Sep 2026 | $20M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/script-capital/ |
| Parallel Venture Capital | VC firm | Boston, MA | Pre-seed, Seed | Cybersecurity, Defense Tech, AI, Quantum | New fund, Mar 2026 | $25M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/parallel-venture-capital/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/roo-capital/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/variant/ |
| Squadra Ventures | VC firm | Baltimore, MD | Pre-seed, Seed, Series A | Cybersecurity, Defense Tech, Generalist | New fund, Mar 2026 | $24M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/squadra-ventures/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/cerberus-ventures/ |
| Decibel | VC firm | Menlo Park, CA | Pre-seed | Cybersecurity, AI, Developer Tools, SaaS | New fund, Apr 2026 | $317M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/decibel/ |
| boldstart ventures | VC firm | New York, NY | Pre-seed, Seed | Cybersecurity, AI, Developer Tools, Robotics | New deal, Jun 2026 | $250M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/boldstart-ventures/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/saas-ventures/ |
| Vine Ventures | VC firm | New York, NY | Pre-seed | Cybersecurity, AI, Fintech, Robotics | New deal, Oct 2025 |  | 2026-11-04 | https://theinvestordatabase.com/investors/vine-ventures/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/mercury-fund/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/theory-ventures/ |

You are seeing 25 of 60. The full list adds 35 more investors and 300 named decision-makers.

Get all 60 investors and 300 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/pre-seed-cybersecurity-investors-us
This page: https://theinvestordatabase.com/lists/pre-seed-cybersecurity-investors-us/

## 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: 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.
- 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.

## 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.