Unit 221b is a managed security services and penetration testing firm, headquartered in New York, United States, founded in 2003.
| Date | Round | Amount | Investors |
|---|---|---|---|
| 2025-09-22 | Seed | $5M | J2 Ventures, Pipeline Capital |
Data from The Signal by Return on Security — cybersecurity funding, M&A activity, and company intelligence.