Zero-Day Research: ehttp Use-after-Free (CVE-2023-52266) and Out-of-Bounds Read (CVE-2023-52267)
The ehttp library advertises itself as a ‘simple HTTP server based on epoll’. The primary goal of the library is […]
Mr. Radar: Layer 1 Recon
When assessing a building’s network security from an adversarial perspective, it can often be helpful to look for open network
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Cascading 555 Timers for Custom Blinking LEDs
For the past several weeks we’ve looked at blinky LEDs, 555 timers, and resistors. This week it’s time to put
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555 Timer Output Stage
The 555 timer has many uses and in this video we’ll explore two different ways to utilize the output. First
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How a 555 Timer Works (Lens Detector Part 1)
I am slowly in the process of developing another class, but this time I want to go about it a
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9 Volt, Battery Powered, Telephone Intercom System
When I was developing the VoIP Fundamentals course, I wanted a demonstration to illustrate the simplicity of the public switched
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Disgusting Hard Apple Cider Experiment
Lately I’ve found myself surrounded by amateur brewers. Many of my colleagues and friends have really bought into making their
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How to Build a 4 Hour Table
On Thursday morning I woke to the realization that we needed a table in our guest bedroom for a visiting
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How to Cut a Bottle with Fire…Kinda
Ever since Thanksgiving there’s been this beautiful, empty olive oil jar at the back of the cabinet. It was slated
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Rig It Up: How to Make a Signal Generator from an Old Microphone and Youtube
Recently I started a redesign for the Griffin amplifier. Why a redesign? It’s a long story that involved me talking
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