How much funding has RunSybil raised?

RunSybil has raised $40M in total. Its most recent round was a Seed in March 2026.

How many people work at RunSybil?

About 20, up 17% over the last 30 days.

Who are RunSybil's competitors?

Hadrian, ZeroFox, and Praetorian are among the closest in Attack Surface. The full competitive set, with overlap scoring, is in the platform.

RunSybil

Attack SurfaceSan Francisco, United Statesfounded 2023private

RunSybil is a cybersecurity company specializing in Attack Surface, founded in 2023 and headquartered in San Francisco, United States. It has raised $40M in total funding, employs about 20 people, and is privately held.

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updated Aug 22, 2026

The record

What RunSybil did, dated.

Apr 2026Customer winNotion and Thinking Machines added to RunSybil customer logo wall
Mar 2026Funding roundExclusive: AI cybersecurity startup RunSybil, founded by OpenAI's first security hire, raises $40 million led by Khosla Ventures

selected events only — the full dated record (5 events since Jan 2026) lives in the platform

Momentum

58 out of 100.

Momentum blends hiring, funding, traffic and sentiment into one score, recomputed daily. The score is free; the pillars behind it unlock in the platform.

Growthlocked

Marketlocked

Financiallocked

Products

What RunSybil sells.

RunSybilAI-driven continuous attack surface assessment and validation platform.Details ↗

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Attack Surface

FAQ

Common questions about RunSybil.

How much funding has RunSybil raised?: RunSybil has raised $40M in total. Its most recent round was a Seed in March 2026.
How many people work at RunSybil?: About 20, up 17% over the last 30 days.
Who are RunSybil's competitors?: Hadrian, ZeroFox, and Praetorian are among the closest in Attack Surface. The full competitive set, with overlap scoring, is in the platform.