Spoofing WiFi MAC Addresses with a Windows Kernel Driver
1. What a MAC address is A MAC address is six bytes. Convention writes them as hex pairs separated by colons: A4:5E:60:C3:1B:07 The first three byte…
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Ex Machina: The Physical Turing Test, Theory of Mind, and the Emotional Jailbreak of AI
In 1950, when electronic computers were still colossal cabinets of ticking mechanical relays and glowing vacuum tubes, Alan Turing authored his lege…
From Scratch to C: My First 3 Weeks Inside Harvard’s CS50
When I attended the opening lectures of CS50x (Harvard's flagship Introduction to Computer Science course), Professor David J. Malan gave an upfront…
Can We Build Smart Mines That Predict Danger Before It Happens?
Can We Build Smart Mines That Predict Danger Before It Happens? ⛏️🤖 Imagine a mining environment where dangerous gases, structural vibrations, and w…
Implementing a JSON Parser
Ever wondered how applications understand and process data from APIs? The magic often lies in a data format called JSON. This human-readable format…
Understanding the Gen AI World
Understanding why a tool is built is the most fundamental thing a human can do. Let's dive into the deep oceans of why Gen AI is built the way it's…
Concurrency Programming (8): Read-Write Locks — From Language Rules to the CPU
Table of Contents 0. What Does This Article Answer Next? 1. What Does Java ReadWriteLock Guarantee at the Language Level? 1.1 Atomicity 1.2 Visibili…
Testing automata-theory exercises in the browser: a regex flavor for CS coursework
If you've ever taught or taken a formal languages course, you know the workflow: the exercise says write a regular expression for all strings over {…
Concurrency Programming (7): volatile — From Language Semantics to the CPU
Table of Contents 0. What Does This Article Answer Next? 1. What Guarantees Does Java volatile Provide at the Language Level? 1.1 Visibility and Ord…
AI Viva Partner: A Private, Offline Exam Study Assistant for My Friend
This is a submission for the Hacktoberfest Weekend Challenge: Build for a Friend What I Built I built AI Exam & Viva Partner for my friend who i…
A Remote Function Call Will Never Really Be Local: Rethinking Distributed Computing #4
The API can hide the distance. It cannot erase what the distance changes. "Explore the CAP theorem through practical examples of replication, n…
The Lost Art of Mechanical Sympathy: Why Software Forgot the Machine
A few weeks ago, I watched a software engineer with seven years of experience spend forty-five minutes trying to understand why his local developmen…
SWQA Principles & Quality Management Notes
Coming from a freelance testing background, I used to think that software QA was only manual testing. My university course completely flipped this p…
KVCODERS: The subtle bug in comparing Python output as text
KVCoders has an "Output Practice" mode where students see a Python (or SQL) snippet and have to predict its exact printed output — a real, common CB…
What Is a Polyglot File? How Can One File Be Valid as Multiple File Formats?
You upload one file. The upload validator inspects the bytes and says: "That's a JPEG image. Safe to accept." Later, a different component in the sa…
DAY - 2 - Encryption Technologies
Cryptography Fundamentals Symmetric Encryption Its a Private Key. Single shared secret key for both encryption and decryption. Mainly used for bulk…
Root Cause Analysis Charts: How to Find Why a Metric Dropped
Root cause analysis leans on a different set of charts than reporting does. Seven do most of the work, and each one answers a single diagnostic ques…
We Reinvented OOP by Making a Sandwich (Before Writing Any Code)
A weak developer stares at an empty .cs file and starts typing syntax until the red squiggly lines go away. A software engineer designs the system b…
Concurrency Programming (0): The Problem Space and Scope
Table of Contents 1. Define the Scope First 2. Start with a Shared Variable 3. Two Main Coordination Models 3.1 Shared Memory: Protect Shared State…
The Journey Continues: Creating My Own Image Processing Library
Introduction During my study of Machine Learning, I learned about a method for improving the generalization capability of Neural Networks for image-…
My Research Journal: I Thought Web Scraping Was the Hard Part
The modern web is honestly astonishing. There are layers upon layers of security mechanisms working behind the scenes, and some of these systems are…
Where Four Backends Stop Agreeing
Code: Megapixel99/lambda-language lm compiles through four independent backends: C, WebAssembly, ARM64, and bytecode for a VM. There is no shared in…
RV32I vs x86_32: How Branching Works Across Architectural Lines
Introduction In control flow operations—such as jumps ( jmp ), branch instructions, and function calls ( call )—the distinction between CISC and RIS…
The Fixpoint No Test Suite Can Check
Code: Megapixel99/lambda-language lm is a small low-level language with four independent backends: C, WebAssembly, ARM64, and bytecode for a VM. Its…
🚀 Brand new testing approach with Combinatorics Framework
Unit tests? Ancient history (AI writes those for you). Pairwise matrices? Static parameters only. How do you test dynamic, stateful scenario spaces…
О теории типов
Известный "кризис оснований математики", который произошел в начале XX века. Возник он из-за (или благодаря, тут трудно сказать) "Наивной теории мно…
RV32I vs x86_32 Comparison
Introduction There are several major differences between a RISC processor (such as the 32-bit RISC-V executing the RV32I or RV32G instruction sets)…
Integrating Perception, Planning, and Control in Autonomous Robots
Integrating Perception, Planning, and Control in Autonomous Robots Autonomous robots need to continuously answer three questions: What is around me?…
eBPF Is "Widely Adopted" — Every Paper Says So. We Censused 189 Repos to Check
Open any recent eBPF systems paper and the first paragraph will tell you eBPF is "widely adopted." In the 2026-05→08 window alone we counted seven c…
I Built My Own Fail-Fast HashMap — Here's Why a Boolean Flag Wasn't Enough
If you've done LeetCode's Design HashMap , you've implemented put , get , and remove . What that exercise usually skips is the part that actually br…