Never give out your personal information to someone you don’t know or trust.
Destroy personal information e.g. old account statements or cards.
Obtain a free credit report at least once a year to make sure no-one is using you name to run up debts. There are two main national credit reporting agencies in New Zealand, Baycorp Advantage and Dun and Bradstreet.
Always check your bank statements carefully to ensure there are no unauthorised transactions.