@cdevroe @davew @gruber Again, you have to think about the whole chain for attacks. And don't think Dave, think heads of states and F500 corps.
Here's how I'd actually MITM it for my 40,000 users on our network equipment. (and yeah, there's a CSS spacing bug for the forwarded server.).
Then, on evilserver.org, I'd have some code that met my goals.
You would do something similar to attack different points in the chain, depending on what your exact goals and jail time tolerances were.