If you're banking online, having good security measures which help keep you safe, and knowing the practical things you can do to protect yourself are essential.

Westpac One online banking address (URL) is:
Business Online banking address (URL) is:

If the site you are on has a login page that differs from these then you're not on an official Westpac online banking login page.

Westpac uses extended validation certificates (EV). If you're running a reasonably new browser, this will display the organisation information associated with the certificate. It should read "Westpac New Zealand Limited [NZ]" either to the left or right of the home page address and show a padlock to confirm a SSL secure connection.