It depends on the country. Where I live now even if I leak my name, date of birth, bank details, national id number, etc. you couldn't do much. We have a country wide 2FA system that all important businesses use (bank, utilities, health, government) to authenticate users.

I'm from the UK though, and previously was a 'victim' of identify theft where a few years ago someone walked into a phone store, and walked out with a new iPhone and contract in my name.