When McGee walks into Abby's lab, his shoes are stuck in the crazy glue, side by side.
The word "victor" was incorrectly translated as being Latin for "victim". "Victor" means conqueror, winner, or victor. "Victima" or "hostia" would have been correct Latin words for victim. Furthermore, 'primitus' is the adverb of the correct 'primus', so this would translate to 'firstly'.
When McGee comes to Abby's lab, he falls down after his shoes become stuck in Crazy Glue Abby put there to stop any intruder. Crazy Glue (cyanoacrylate) is quick-binding adhesive but it still requires at least several seconds of applied pressure, and this time is increased with the amount of glue used, making a 'sticky trap' capable of catching walking people physically impossible. Last but not least, such amount of spilled cyanoacrylate would release a lot of heavily irritating and mildly toxic vapours that would make sitting in the same room extremely uncomfortable if not outright dangerous.
At the end of the episode, McGee is watching a live news feed on his iPhone/iPod. The address in the browser's address bar is 192.168.1.1 which is an internal network address, rather than an external one which would be required to view such a live news broadcast.
When playing a video clip made by the murderer and uploaded to the CyberVid website, McGee says that they (meaning Gibbs and the team) are the first ones to watch it. When the clip ends, however, the view counter by the video window shows that the clip has already been viewed over 500,000 times.
When the killer calls Gibbs on his cellphone, the number "666" is visible on the phone's secondary external display. When he answers it, there is a clear sticker visible on the main screen with the same number printed on it. It was most likely was put there to imitate a real Caller ID display.
At the end of the episode, McGee is watching a live news feed on his iPhone/iPod. The address in the browser's address bar is http://192.168.1.1/ which is an internal network address, rather than an external one which would be required to view such a live news broadcast.