Re: "work is underway to further protect data"...
Are you kidding, the OAIC? They know we don't deserve to see behind the curtains.
Records from these datasets are only leaked occasionally, and carefully, quite selectively, when they need to target someone, or some group. Need to see how much makes it out publicly. As KYC datasets are so detailed, with financial and private contact of maximum importance to everyone in them, the ones they miss out are significant. Should the group be paid for by an Actor of significance, they'll scrape anyone they care about from the list, before they publish any records from it. This will be checked by eeryone 'in the tent', so they can gain clues about those behind it.
Should data privacy ever become part of the public narrative during a leak (rarely), they wheel out the 'We need to centralise all records to absolutely secure (eminently, who dare question this anyway)' government dept' datastores', where the only one to blame for any wrongdoing are Bots and IT bods.