This data is publically available to anyone in Sweden:

Your salary (well, last years taxable income), debts/credit rating, criminal history, address, phone number, which vehicles and properties you own and which company boards you're on.

One of organized criminals biggest income these days are scamming rich old folks because it's so trivial to get all details needed (and who to target) to be a pretty convincing bankman, IRS type agent/etc.

Some of it you have to kind of manually request at various places, but it's all available.

So data breaches aren't really that big of a deal when everything is already public.