The Great NPM Heist - September 2025
On September 8, 2025, the JavaScript ecosystem experienced what is now considered the largest supply chain attack in npm history. A sophisticated phishing campaign led to the compromise of a trusted maintainer’s account, resulting in the injection of cryptocurrency-stealing malware into 18+ foundational npm packages. These packages collectively accounted for over 2 billion weekly downloads, affecting millions of applications globally—from personal projects to enterprise-grade systems.