impressive understanding of tech

This is one of the most accurate mainstream/big budget movies I've ever seen when it comes to tech stuff. A few things I noticed:
* Used real (private) ip addresses instead of invalid ones (many movies will have an address like 10.123.12.586... last octet is invalid of course.. which is stupid since it's a private ip anyway)
* Description of TTL in relation to DNS was correct
* Use of trojan was correct
* No magic hacking ability or tracing ability of remote systems
* Correct use of "virtual machine" in the opening scene
* Amusing reference to the NSA wanting to keep their abilities secret, which is pretty darn accurate in retrospect given the recent stories about them. It's no longer tin-foil-hat-territory to suggest that the NSA can do a lot more than they let on.

There was a lot of stuff thrown around in some scenes and I don't remember it all but nothing jumped out as wrong. Very impressive!

The biggest problem had to do with the video distribution scheme. They said the domain was pointing to one ip address that switched every time they shut it down.. fine.. well no way is one computer at a time going to support the huge number of simultaneous HD video streams seen in this movie! It was thousands of new streams per second toward the end. The bad guy would have to be distributing the load across probably hundreds of computers at the same time, not one at a time.

What they said wasn't *wrong* though -- it would work, just not at the scale required by the movie. I think that's an acceptable simplification.