Impressive article. I read most of it without skimming and that is high praise from this AuDHD nerd.

It's definitely suspicious. My money is on inside job — perhaps someone not fond of the current administration's handling of things. In my experience, these types of vulnerabilities are well-known and kept in the back pocket of engineers that have a lot of experience maintaining the equipment. Everywhere I've worked has been deeply vulnerable in some way, all of the engineers knew it, and often joked about it or were counting the days to getting pwned because companies never like to spend money to address the issue. I'm sure the military is no different. Probably worse.