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## In the last episode In the last [episode](/sc01), we covered how to prepare the shunt resistor and connect it to the target circuit, and then used that setup to perform a basic SPA attack. This time, using the same measurement setup but with some more advanced math, we'll go much further....

## Session Slip Over the past weekend I was casually playing some CTFs. This time I participated in Athena CTF and tried to solve a few of the Web challenges. One of them was labeled *medium*, though in my opinion it sat closer to easy, but it chains three distinct bugs, so the label is...

## What is that? Have you ever heard of a side-channel attack? Maybe not, but you might have heard of the "Pentagon Pizza Index." The idea is somewhat similar. A side-channel attack allows you to gather information indirectly by observing correlated signals rather than the target data itself,...