The Origins of XSS (Cross-Site Scripting)

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Cross-Site Scripting, or XSS, is one of the most common and dangerous vulnerabilities in web application security. It enables attackers to inject malicious scripts into webpages viewed by other users, with potential consequences ranging from stealing sensitive data to compromising user accounts and spreading malware. To fully understand the significance of XSS, it’s essential to trace its origins and explore its evolution over time.

The Early Days of the Web and Web Application Security

In the early days of the web, security wasn’t as much of a focus for developers as it is today. Websites were simple, static pages, and developers often didn’t think about securing the content that was being displayed. The web was built primarily for communication and information sharing, and the idea of malicious users exploiting vulnerabilities wasn’t a major concern.

However, as web applications became more interactive, with the introduction of dynamic content and user-generated…