Unit 221b is an online cyber security firm focusing on providing its clients with all the tools necessary to prevent cyber hacks.
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"Unit 221b — Funding & Investors." VCBacked, September 22, 2025, https://www.vcbacked.co/company/unit-221b. Accessed June 17, 2026.
VCBacked. (2025). Unit 221b — Funding & Investors. Retrieved June 17, 2026, from https://www.vcbacked.co/company/unit-221b
{{cite web |title=Unit 221b — Funding & Investors |url=https://www.vcbacked.co/company/unit-221b |website=VCBacked |access-date=June 17, 2026}}Profile data sourced and verified per the VCBacked methodology. Last funding round dated .