Australia's second-largest mobile telecommunications provider, Optus, is currently experiencing a national service outage, with mobile phone and internet access unavailable for all customers, causing major disruption to business, finance, public transportation, and other important services
https://www.abc.net.au/news/2023-11-08/optus-outage-live-blog/103076996
What caused it?
I'll resolve all answers as we learn enough to rule them in or out, according to information published by reputable media sources, or otherwise to my judgement, or N/A answers that can't reasonably be ruled in or out by end of year.
Note that if a primary cause is identified, all other causes not known at that time will resolve NO - they will not remain open on the off chance that there were muliple causes not yet identified at the time the primary cause was identified.
Feel free to add answers that are more specific than existing answers. For example, I've already added "outside cyber-attack", but you might add "Cyber-attack by <entity>", and both can resolve YES if they're correct.
@Eliza No, I don't think so. I see the boost in the txns table, but not any refund. I see a Ṁ200 CONTRACT_RESOLUTION_PAYOUT when the market resolved, that's just the creation costs being returned. An I see a -Ṁ36 CANCEL_UNIQUE_BETTOR_BONUS. No boost refund. I don't think it was used up either, since the boost I did to the replacement market took a long time before getting many hits.
@chrisjbillington I know that paid but unapplied subsidies don't get returned, or didn't at some earlier point (applied subsidy does). Seems like this is in the same class of 'bug'.
I feel like both should be refunded.