Comment by haser_au

> Non-production on the same network was not to be touched.

Unsurprisingly, you're were absolutely correct.

"An early investigation suggests hackers were able to breach Optus through a test network"

'Human error' emerges as factor in Optus hack affecting millions of Australians https://www.abc.net.au/news/2022-09-23/optus-hack-likely-res...