11/07/2017 ANNA HENSEL entrepreneurs
Ann Arbor cements its status as a tech hub to watch with first unicorn

Last month, Ann Arbor-based startup Duo Security announced that it had raised a new $70 million round, valuing the company at $1.17 billion. That made Duo Security — which creates a two-factor authentication app for enterprise companies — the first unicorn company in Ann Arbor, and its $70 million series D the largest round of venture capital raised by any company in Michigan history.

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