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Castle

6 open
Detroit, Michigan, United StatesFounded 201436+ employeesSeries A raisedSeries APrivate
Last round: series a · $9.2M · Feb 2019(6 rounds total)
Founded by Max Nussenbaum, Scott Lowe, Tim Dingman
Backed by(13 investors)
Y CombinatorIndex VenturesF-PrimeFirst Round CapitalKhosla VenturesLiquid 2 VenturesJohn CollisonJeff ArnoldAnand SubramaniSV Angel

Castle lets you block bad bots, account takeovers, transaction fraud, and spam — all without the hassle of CAPTCHAs.

YC W16

About the Company

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