If you control any firewall or router along the way you can inject iframes which retrieve any url you like and run script in the same-origin context. Except for "https only" sites, but note that Microsoft helpfully provides the government of Tunisia with a trusted root CA in their products. Try https://www.certification.tn/ . I wonder if it's a code-signing cert?
> Microsoft helpfully provides the government of Tunisia with a trusted root CA in their products
Isn't this rather huge news? Why did they do this sort of downgrading hackery when they could do a more elegant (and slightly more transparent) man in the middle?
A) It's better to avoid using your capability even if you have it.
B) Probably a lot of users prefer Mozilla, though it may defer to the system store on Windows anyway, I'm not sure.
C) For the same reasons it's a pain for FB to use https everywhere, it's a pain for Tunisia to set up SSL interception on their outbound connections. There are certainly off-the-shelf boxes which can do it though.
If you have access to a Windows machine, visit http://bit.ly/eWYRbA in IE then check your personal cert store for Agence Nationale de Certification Electronique