Category Archives: Computers

Sometimes I write Ruby code. Occasionally, it even works.

Notes on RF Retroreflectors

Over the past few weeks, I’ve been spending some time learning about RF retroreflectors. The goal of this is to improve my understanding of the theory and application of RF in general. An RF retroreflector is a device which takes … Continue reading

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Writeups – LowDeep, Kaboom (Insomnihack Teaser)

This weekend, I participated for a few hours in the Insomnihack Teaser CTF. Due to poor time management (specifically, my inability to correctly convert UTC time), I was only able to play for a little while, but I solved two … Continue reading

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Effective Electromagnetic Keyboard Side-Channel on a (kinda) Budget

Update: a primitive GUI is now available to help remove the last false positives from signal matching. To use this, execute keyboards/classifier-read.py with the “–gui” argument to use this, code is in keyboards/ui.py. This week, I made good progress on … Continue reading

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Writeups – Elecduino, python_jail (NCTF)

This weekend, I participated in NCTF. This was a beginner CTF, and it was good both as a morale boost, particularly as other research wades into unexplored territory, as well as a refresher on basic skill. It is always a … Continue reading

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Preliminary Notes on Electromagnetic Keylogging

This is my keylogger. There are very few like it – this one is mine. Over the past few weeks (and on and off before that), I have done some work on electromagnetic keylogging – this has met with some … Continue reading

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