If visibility settings or `isExposed` configurations cannot be changed due to managed package constraints, you have several alternatives:
1. **Create New Components**: Create a new component, custom settings object, or message channel with the desired visibility settings (e.g., setting `isExposed` to `false` or visibility to "Protected").
2. **Replace All References**: Replace all references in the managed package to the previous component with the new one. This ensures the component is not accessible outside the namespace and reduces security risks.
3. **Address Data Exposure Issues**: For data exposure issues specifically, create a new custom settings object with the desired visibility (e.g., "Protected") to effectively resolve the exposure concern.
4. **Preserve Functionality**: This approach helps meet security requirements while preserving the original functionality of your managed package.
5. **Thorough Review**: It's important to review the managed package thoroughly after making these changes to avoid introducing other vulnerabilities.
This strategy allows you to work within managed package constraints while still addressing security requirements and maintaining compliance with visibility and exposure controls.