I worked in Federal government on classified systems. There were many safeguards in place, most importantly networks that were 100% disconnected from the Internet and locked down workstations. That made sure that even the most inept user could not cause a problem like this.

Everyone I worked with respected OpSec and would never do something as risky as bring in an outside laptop and connect it to the network. DOGE has been so reckless that I believe they wanted to have the system hacked, because seeing our government destroyed is their real objective.