Can you please give a little “more of the story”, due to some of us cannot watch videos at work or whatever.... Thank you.
The hacker team full account can be found here:
https://jhalderm.com/pub/papers/dcvoting-fc12.pdf
It’s an interesting read.
“...we discussed the attack with D.C. officials. They explained that they found our modifications to the application code by comparing the disk image of the server to a previous snapshot, although this required several days of analysis. They confirmed that they were unable to see our attacks in their intrusion detection system logs, that they were unable to detect our presence in the network equipment until after the trial, and that they did not discover the attack until they noticed our intentional calling card.”