Criminal Minds usually holds a much higher standard than this episode. Some cut off writer must have acted out his own wet dream about computers in a total massacre of facts.
Starting all the way from interpreting regular HTML/CSS design -code as a chat room code, to really awkward lies and myths about internet hacking and server bouncing.
They even managed to pull one of the most idiotic myth classic of all time, "Garcia, can you magnify the [...pipe lines on the video]". Iiick! And this is 2009?
This episode is almost as bad, research wise, as it can get. Mostly like a worst-of-research-bloopers.
No wonder, the writers were so afraid of computers and internet, when they obviously have no clue on how to use them :S