Oranga Tamariki is warning children might be put in danger by changes to the Privacy Act.
The Government is moving to change the law in line with tighter data privacy regulations in the European Union.
This would likely oblige people to be told if their personal data was accessed by a third party, when at present they do not have to be notified.
The child protection agency says children and teenagers came to it expecting confidentiality - not that the people they were talking about would then have to be alerted by OT.
Phil Pennington is looking at this