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Cross Site Scripting (XSS)

At the beginning, web pages were very static. They were written in HTML, and the web browser had one job, to render the HTML to a page filled with text, images and links. After a few years, the developers wanted more, and JavaScript got introduced.Together with JavaScript came a new breed of vulnerabilities, where the attackers could exploit the possibility to run code in browsers, this was called Cross Site Scripting or XSS.