XSS in JavaScript

XSS, or Cross-Site Scripting, is a security vulnerability where attackers inject malicious code—often JavaScript—into trusted websites. When other users visit these compromised pages, the malicious code runs in their browsers, potentially stealing personal information, session tokens, or performing unauthorized actions. Essentially, it's like someone sneaking harmful instructions into a website's code, tricking visitors into executing actions they shouldn't. Proper website safeguards, such as input validation and content security policies, help prevent XSS attacks and protect users.