Seed Cybersecurity companies in San Francisco
Companies defending or attacking software, networks, and cloud infrastructure. Filtered to Seed-stage companies headquartered in San Francisco.
Built from a search like: “Top Seed Cybersecurity companies in San Francisco”
Ranked by current headcount across Seed Cybersecurity companies in San Francisco. Refreshed daily.
- 1Uno (acquired by Okta)· San Francisco, California, United States
- Seed
- 89 employees
- Founded 2020
- 2Levo.ai· San Francisco, California, United States
- Seed
- 35 employees
- Founded 2021
- 3Akto.io· San Francisco, California, United States
- Seed
- 30 employees
- Founded 2022
- 4Tokensoft· San Francisco, California, United States
- Seed
- 20 employees
- Founded 2017
- 5Archipelo· San Francisco, California, United States
- Seed
- 17 employees
- Founded 2020
- 6Secfense | The Fast Track To Passwordless· San Francisco, California, United States
- Seed
- 15 employees
- Founded 2018
- 7CrowdStrike Falcon Surface (formerly Reposify)· San Francisco, California, United States
- Seed
- 14 employees
- Founded 2016
- 8Repello AI· San Francisco Bay Area
- Seed
- 13 employees
- Founded 2023
- 9RunSybil· San Francisco, California, United States
- Seed
- 12 employees
- Founded 2023
- 10AKA Identity· San Francisco, California, United States
- Seed
- 12 employees
- Founded 2023
- 11MirrorTab· San Francisco, California, United States
- Seed
- 12 employees
- Founded 2021
- 12Kenzo Security· San Francisco, California, United States
- Seed
- 12 employees
- Founded 2023
- 13Thistle Technologies· San Francisco, California, United States
- Seed
- 10 employees
- Founded 2020
- 14Zendata· San Francisco, California, United States
- Seed
- 10 employees
- Founded 2021
- 15PingSafe (Now a Part of SentinelOne)· San Francisco, California, United States
- Seed
- 8 employees
- Founded 2021
- 16StealthMail· San Francisco, California, United States
- Seed
- 7 employees
- Founded 2017
- 17ZeroPath· San Francisco, California, United States
- Seed
- 7 employees
- Founded 2024
- 18Corgea· San Francisco, California, United States
- Seed
- 6 employees
- Founded 2023
- 19Harmony Intelligence· San Francisco, California, United States
- Seed
- 6 employees
- Founded 2024
- 20404 Security Not Found· San Francisco, California, United States
- Seed
- 5 employees
- Founded 2022
- 21Intrinsic (acquired by VMware)· San Francisco, California, United States
- Seed
- 5 employees
- Founded 1999
- 22SubImage (YC W25)· San Francisco, California, United States
- Seed
- 5 employees
- Founded 2024
- 23Telivy· San Francisco, California, United States
- Seed
- 4 employees
- Founded 2021
- 24URnetwork· San Francisco, California, United States
- Seed
- 4 employees
- Founded 2023
- 25Veria Labs· San Francisco, California, United States
- Seed
- 4 employees
- Founded 2025
Find engineers at Seed Cybersecurity companies in San Francisco
Searching for “engineers at top Seed Cybersecurity companies in San Francisco” surfaces this slice of the market. The list above ranks Cybersecurity companies headquartered in San Francisco whose latest disclosed round is Seed, by current headcount, drawn from public LinkedIn and Crunchbase records. With 28 matching companies in our index, this is a tight read on where the Cybersecurity talent in San Francisco is heating up.
Three filters at once narrows the field hard. The companies that survive all three — Seed, Cybersecurity, in San Francisco — are usually the most targeted recruiting pool a hiring manager can ask for. Senior engineers, founding designers, and product leads here are about to become Cybersecurity’s next operators and angel investors.
Refolk converts this list into a live search. Ask for “senior engineers at Seed Cybersecurity companies in San Francisco hiring” or “founders of Seed Cybersecurity companies in San Francisco who left in the last year” and Refolk returns a ranked shortlist with the evidence behind each match.
How this list is built
Last refreshed: Thu, 07 May 2026 07:19:03 GMT
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