The Office of the Privacy Commissioner and the ACC Board have jointly commissioned an inquiry into the privacy breach in which information about more than 6000 claims was emailed to ACC claimant Bronwyn Pullar.
KPMG and Integrity Solutions Pty Ltd (IIS) led by former Australian Federal Privacy Commissioner Malcolm Crompton have been commissioned to conduct the inquiry.
New Zealand Privacy Commissioner Marie Shroff said the inquiry would look into the circumstances surrounding the particular incident.
"The inquiry will also look more widely at whether systemic or organisations weaknesses exist in the way personal information is handled by ACC."
The privacy breach occurred in August last year.