"Shortly thereafter victims discover their Romeo or Juliet isn't quite who they thought they were as they are left bewildered with empty pockets and an empty heart."
Such cases occurred all too often, said Antony Buick-Constable, acting chief executive of the association.
"We live in an increasingly online world, which means people become very comfortable building online relationships.
"We all need to be cautious if ever approached for money or personal details online. It is important to remain vigilant in protecting our personal information, bank accounts and ultimately our money."
Tips for avoiding scams
• Don't share your bank account login details, cards, pins or passwords with anyone.
• Only provide personal information such as date of birth, address, driver licence and passport details to trusted people and organisations.
• Don't reply to spam emails, open any of their files, click on their links, or call numbers included in the emails.
• Double-check any email or website address against one you know to be legitimate.
• Don't give or lend money to people you don't know, especially people you've met only online.
• Contact your bank immediately if you think you're a victim of a banking scam or think your bank account has become compromised in any way
Source: NZ Bankers Association