The real problem with mixed content is that you're compromising the security of SSL when you allow insecure resources on the page. If a page is otherwise secur

The real problem with mixed content is that you're compromising the security of SSL when you allow insecure resources on the page. If a page is otherwise secure and includes an insecure ad script call, for instance, it's relatively easy to hijack that javascript request and munge it to do whatever you want with the DOM and javascript-accessible cookies.