The office of Human Services Minister Alan Tudge has refused to release more than a dozen documents related to his decision to release personal information on a critic of his robo-debt notice system on the grounds it is legally privileged and would disclose personal information.

After months of searchingCrikey finally managed to track down the advice Tudge was relying on when his office released the personal information of blogger Andie Fox to a Canberra Times journalist, but now his office won't hand it over.