Which scenario requires a Didn't Load flag?

A "Didn't Load" flag is necessary for scenarios where the intended content of a page is not accessible or has been interrupted due to certain issues. In the case of a page with a malware warning, users are typically redirected or presented with a warning about potential security threats, thereby preventing the content from loading successfully. This scenario signifies a failure in loading the content as the users cannot proceed with viewing the page due to the security alert.

Conversely, the other scenarios involve pages where the content loads as expected or is actively displayed, such as an advertisement on a page that may signal successful loading, or a page that is well-structured with navigable links. In these cases, there is no disruption in the loading process that would warrant a "Didn't Load" flag.