FAQ-001250 - Namespace Boundary Security / Cross-Namespace Communication Security

Cross-namespace event communication in Salesforce can pose security risks due to the potential exposure of sensitive data and the inability to verify the trustworthiness of the sender. For instance, using Lightning Message Channels (LMC) with the `exposed=true` attribute in managed packages is flagged as a security concern because it allows external components to interact with internal components without proper validation. This can lead to unauthorized access or data manipulation. To mitigate these risks, it's recommended to: - Use secure alternatives, such as the `pubsub` module. - Implement validation mechanisms to ensure secure communication between components.

The FAQ content was accurate and well-structured, so minimal changes were needed. The only improvement made was changing 'it is recommended to:' to 'it's recommended to:' to follow the conversational tone guidelines by using contractions. This makes the content more approachable and friendly while maintaining all technical accuracy. For security rules selected: 1. **AvoidLmcIsExposedTrue**: This rule directly relates to the FAQ's core discussion about Lightning Message Channels with 'exposed=true' attribute. The FAQ explicitly mentions 'using Lightning Message Channels (LMC) with the exposed=true attribute in managed packages is flagged as a security concern' which is exactly what this rule addresses - flagging LMC configurations that expose channels across namespaces. 2. **AvoidLwcBubblesComposedTrue**: This rule is related to cross-namespace event communication security, which is the main topic of this FAQ. While the FAQ focuses on LMC specifically, the broader context of cross-namespace event communication includes LWC event bubbling across component boundaries, which this rule addresses. The FAQ's discussion of 'potential exposure of sensitive data' and 'inability to verify the trustworthiness of the sender' applies to both LMC and LWC event bubbling scenarios.