What is the key difference between Node.js and JavaScript as highlighted in the article?

JavaScript is a programming language, while Node.js is a JavaScript runtime environment built on Chrome's V8 engine. Although both use .js file extensions on Windows, they have different syntax and execution environments—Node.js runs server-side and supports file system operations, HTTP modules, and third-party packages via npm. For more on using Node.js in offensive security, see the full article: Node.js in Penetration Testing - Implementation of a Downloader.