What the 4-digit code every commercial aircraft broadcasts actually tells air traffic control

Every commercial flight has a squawk code. Learn why there are only 4,096 codes, what 7500, 7600, and 7700 mean, and how ATC ...
Microsoft

GigaWiper: Anatomy of a destructive backdoor assembled from multiple malware

In October 2025, Microsoft Threat Intelligence identified destructive wiping activity and uncovered a sophisticated Go programming language (Golang)-based backdoor we now track as GigaWiper, a ...
Investopedia

Quick Response (QR) Code: What They Are, How They Work, and Types

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...
GitHub

Coding Interview University

I originally created this as a short to-do list of study topics for becoming a software engineer, but it grew to the large list you see today. After going through this study plan, I got hired as a ...