Some good resources here.
https://www.cyber.gov.au/acsc/view-all-content/alerts/optus-…
Optus has suffered a massive data breach, compromising the personal information of up to 9 million customers.
About 2.8 million customers have had all their personal details taken in the cyber attack, including their passport and licence numbers, email and home addresses, dates of birth and telephone numbers.
About 7 million had their dates of birth, email addresses and phone numbers stolen.
The breach involves both current and former customers.
This is worrying.
22/9: Optus’s statement.
Mod 26/9: Whirlpool - Check Optus Customer API
That is an excellent question. I suspect the latter. So as much as I want to laugh at this as one of the uncompromised neverOptus chads in the peanut gallery, the fact that I had an Optus phone a decade and a half ago means that I'm probably in the leaks somewhere too. RIP.