Scammers are using an ACC email address to try trick people into clicking a link that could compromise their email account.
The spam emails, sent this afternoon, appear to come from a legitimate @govt.nz or @co.nz email address and urge recipients to migrate to a new version of Microsoft Office.
ACC has issued an alert about the phishing emails.
"Under no circumstances should you click on the link ... If you get an email like this, do not click on any links or attachments."
It's not yet known how the emails were sent or how many people have received them.