It appeared that the service did not hyperlink the external endpoints directly, but modified it to the following endpoint where www.google.com would be an example posted URL... < a href = "https://www.bustabit.com/external?url=https://www.google.com/a" > https://www.google.com/a </ a > It turns out that the application pushed all hyperlinks to a JavaScript function automatically, and if there was a failed URL (e.g. had %0t ), the application would crash.