Gabriel Gonzalez, Author at Gabriel Gonzalez

Fault Injection III: Connecting the MAXIM4619

Mar 12, 2025

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In my previous post, I detailed some tests into fault injection techniques on the nRF52 family experimenting with crowbar circuits, and ultimately being surprised by the effects of an analog CMOS switch, the MAXIM4619. After observing its higher overvoltage and ringing effects compared to a traditional crowbar circuit, many of you reached out asking how…

Fault Injection II: Does glitch width really matter?

Jan 22, 2025

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Gabriel Gonzalez

in fault injection

When performing fault injection attacks we are used to see how the glitch width moves within a set of values, hoping this would help hit the right combination. This is true while blindly searching for a new vulnerability. But when it comes to repeatability, does it really matter? Building upon our previous post on fault…

Fault Injection I: Crowbar Circuit vs Analog CMOS Switch

Dec 2, 2024

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by

Gabriel Gonzalez

in fault injection

As part of my ongoing research into fault injection techniques, my current goal is to understand and successfully use fault injection in a target SoC with minimal modification to the board, which would reduce the entry barrier for performing an attack and minimize potential damage to the target board. I chose the well-known nRF52 family,…

Author: Gabriel Gonzalez

Fault Injection III: Connecting the MAXIM4619

Fault Injection II: Does glitch width really matter?

Fault Injection I: Crowbar Circuit vs Analog CMOS Switch