After Uber built a new version of its app with the InAuth code installed, Quentin watched the fraud numbers fall off a cliff. When a scammer tried to create a new account on a device Uber had fingerprinted, Uber’s anti-fraud systems would kick in and the account would be banned automatically. Finally, after years of being ripped off, Uber had found a way to fight back. There was one problem: InAuth’s service blatantly violated Apple’s rules regarding user privacy. So everything between Uber and InAuth had to be kept secret. if Apple found out, both Uber and InAuth could be in serious trouble,
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