FAQ-000305 - CSS and UI Security / Improper CSS Loading Vulnerabilities

To resolve these issues: ### JS in Salesforce DOM - Store JavaScript code in static resources instead of executing it directly in the Salesforce domain. - Avoid dynamically loading JavaScript or CSS unless stripped of executable code. - If dynamic content is necessary, host it externally and embed it via an iframe to isolate it from the Salesforce domain. - Sanitize or encode any data passed to the DOM to prevent vulnerabilities like cross-site scripting (XSS). ### Lightning: Improper Script Load - Load all JavaScript files from the static resources folder of your package, not from third-party endpoints or CDNs. - Use the `$Resource` URL to reference these static resources in your Lightning components. - Avoid dynamically loading scripts from external domains and ensure compliance with Content Security Policy (CSP) guidelines. ### Additional Security Measures - Ensure all scripts and resources are version-controlled within your package - Follow secure coding practices for any dynamic content - Maintain proper namespace isolation - Use secure methods for resource loading and management - Test thoroughly to ensure compliance with security requirements Let me know if you need further clarification!

The FAQ is well-structured and accurate. No significant outdated content was detected. The content aligns well with security best practices and requirements. I made one minor improvement to enhance readability by removing the phrase 'Let me know if you need further clarification!' from a bullet point and moving it to the end as a natural conclusion. Regarding the security rules selected: 1. **LoadJavaScriptHtmlScript & LoadJavaScriptIncludeScript**: These rules directly relate to the FAQ's guidance about loading JavaScript files from static resources and avoiding external script loading. The FAQ specifically addresses "Load all JavaScript files from the static resources folder of your package, not from third-party endpoints or CDNs." 2. **LoadCSSLinkHref**: This rule applies to the FAQ's advice about "Avoid dynamically loading JavaScript or CSS unless stripped of executable code" and proper CSS loading practices. 3. **AvoidCreateElementScriptLinkTag**: This rule relates to the FAQ's guidance on avoiding dynamic script loading and proper script management practices. 4. **ApexXSSFromEscapeFalse, ApexXSSFromURLParam, VfUnescapeEl, AvoidUnescapedHtmlInAura**: These XSS-related rules directly connect to the FAQ's emphasis on "Sanitize or encode any data passed to the DOM to prevent vulnerabilities like cross-site scripting (XSS)" and the overall security measures discussed.