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basilikumyesterday at 12:15 PM1 replyview on HN

How does preventing people from running software of their choice on their own device (what you call jailbreaking) prevent fraud in practice? It's a pretty strong claim you're making there. And it's being made frequently by institutions, yet I have never seen it actually explained and backed up with any real security model.

All the information and experience I ever got tells me this is security theater by institutions who try to distract from their atrocious security with some snake oil. But I'm willing to be convinced that there is more to it if presented with contraindicating information. So I'm interested in your case.

How did demanding control over your customers' devices and taking away their ability to run software of their choice in practice in quantifiable and attributable terms reduce fraud?


Replies

browningstreetyesterday at 3:14 PM

The app does fingerprinting and requires certain secure device profile characteristics before the app lets a user initiate certain kinds of financial transactions.

Those are based on APIs available from the mobile devices. Google and Apple can offer other means by which to secure these things, and to validate that the device hasn't been cracked and is submitting false attestations. But even a significant financial institution has no relationship with Apple on the dev side of things.. Apple does what it decides to do and the financial institution builds to what is available.

These controls work -- over time fraud and risk go down.