this post was submitted on 11 Oct 2024
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Buchanan walks through his process of experimenting with low-cost fault-injection attacks as an alternative when typical software bugs aren't available to exploit.

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[–] [email protected] 20 points 1 week ago (1 children)

If you have physical access, then you have total access.

[–] [email protected] 20 points 1 week ago (2 children)

Not if the storage is encrypted. That's why vulnerabilities in operating systems/kernel are so impactful, as they can bypass that encryption.

[–] [email protected] 2 points 1 week ago

Well no, if the device is powered off you need to brute force the encryption which will take a very long time.

However, if the device is booted you can just read from ram.

[–] [email protected] 1 points 1 week ago

It's a bit more nuanced even.

If you have one-time physical access, then you have total access, permitting the storage is not encrypted.

If you have recurring, undetected physical access, then you have total access.

Ex: Dropping a script into someone's unencrypted /boot partition that captures the decryption credential, then coming back later to collect the credential and maybe also remove the evidence.