RunSybil
Agent45Agent Readiness: 45/100. Above median. Measured by StartupHub.ai. Median 41.RunSybil offers an AI-driven pentester that automates hacker intuition to find vulnerabilities, aiming to drive down the speed and cost of vulnerability discovery to zero.
About
RunSybil is an innovative cybersecurity company specializing in AI-driven penetration testing. Their core mission is to automate hacker intuition, enabling organizations to proactively discover vulnerabilities before they can be exploited. By leveraging state-of-the-art AI and exploitation techniques, RunSybil aims to significantly reduce the time and cost associated with traditional vulnerability discovery.
Key facts
At-a-glance profile data
- Website
- runsybil.com
- Founded
- 2023
- Employees
- 28
- Total funding
- $40M (Unknown)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 18 Mar 2026 | Undisclosed round | $40M | - |
Tech stack
Detected on runsybil.com, last scanned 8 Sept 2026. Run your own scan
- Auth
- Auth0
- CMS / Builders
- Webflow
- CDN
- Cloudflare
- Email provider
- Google Workspace
“OpenAI's first security hire raised $40M to automate pentesting with AI agents. RunSybil closed a $40M round led by Khosla Ventures , covered exclusively by Fortune this week.”
View on Reddit“With both RunSybil and Xbow raising the same week, it looks like autonomous offensive security is becoming a real category.”
View on RedditSome comments are pulled from public discussions around the web (look for the source icon). Quotes are excerpts; click through to read the full thread.
Frequently asked
What does RunSybil do?
The company provides active defense capabilities, allowing clients to identify security weaknesses rapidly and re-test fixes in hours. Founded in 2023 by alumni from leading tech and security firms like OpenAI, Meta, and Mandiant, RunSybil is building a fully autonomous pentesting service powered by Large Language Models (LLMs).
How much funding has RunSybil raised?
RunSybil has raised a total of $40M in funding. The most recent round on record is Unknown.
How many employees does RunSybil have?
RunSybil has approximately 28 people on record.