A new scam spread via Facebook messenger could affect entire businesses, a security expert said.
Tom Moore of Aura Information Security said the malware has "the potential to do huge damage".
The scam works by sending users a message from a Facebook friend encouraging them to click on a YouTube link.
The link is not actually a YouTube video but malware that enables hackers to access the user's account.
A number of New Zealanders have reported receiving these messages and also seeing their account sending those messages, posing as them.