angular-sanitize provides security by sanitizing HTML input. It prevents cross-site scripting (XSS) attacks by parsing HTML and removing potentially malicious code. The module is crucial for applications rendering user-generated HTML as it protects against injection vulnerabilities. By whitelisting allowed HTML elements and attributes, it ensures safe rendering within Angular applications, enhancing overall security posture for dynamic content display. Developers integrate this module to prevent malicious code from executing in the user's browser.