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dropping CCs at request Anyway, all said I agree with you. But the concerns you mention here are also true of Android devices. I would rather have physically replaceable radio modules and then work on reveng or memory isolating the drivers. twitter.com/DanielMicay/st

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Big difference between a device with components that are strongly hardened, highly audited and have good ongoing security support vs. the complete opposite. Also, portraying it backwards by misinterpreting how DMA / IOMMUs work is just wrong.

Lance R. Vick ( @lrvick@mastodon.social )

@lrvick

Sep 11, 2020

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@DanielMicay

You can't claim hardware is secure you can't see the firmware for. Tomorrow's update could be hostile. You present a fair argument though. We either design to distrust the radios, or we might as well blindly trust their updates. I am convinced here.

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Devices you're talking about have entirely closed source hardware and firmware. If you choose components that are known to be insecure and also don't apply fixes to known security vulnerabilities, backdoors are a non-issue, because you have the front door wide open to attackers.

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and

You're also once again misrepresenting closed source software as a black box. It isn't, and in fact, if you're looking for malicious, hidden backdoors, I do not really see how you're any better off trying to find them hidden in source code vs. from the final assembly code.

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and

There is a whole compilation pipeline leading to that assembly code and all of the fancy language / compiler features, etc. are tools for the attacker to hide / generate their backdoor. Also, really, when it's full of unintentional vulnerabilities, how is any of this relevant?

5:24 PM · Sep 11, 2020Twitter Web App

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and

Why are you okay with using the Linux kernel when it's full of remote and local code execution backdoors? You talk about theoretical backdoors when there are real, unintentional (supposedly) backdoors called vulnerabilities which you don't seem in a rush to get fixed...

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