https://www.nytimes.com/2017/09/07/business/equifax-cyberatt...
OPM Hack
https://en.wikipedia.org/wiki/Office_of_Personnel_Management...
The only way to create software engineering reform you envision is to force a paradigm shift. The only thing that could instigate it would be like skynet with many dead. Though, the unknown damage from OPM could be quite severe.
There might be 'security standards' but neither the government nor private sector can guarantee anything to be safe. The civilization built on IT networks will need to be rewowrked.