A bank boss believes scams are among the top three threats they're facing.
And it's prompted SBS bank to drop its cap for online transfers via its app or internet banking, from $50,000 a day to just $10,000.
The move follows a 50 percent increase in attempts to it dupe its customers out of their savings.
It estimates about 1 percent of customers do daily transfer in excess of the new limit and they'll still be possible but only via the customer call centre.
But SBS says scams are becoming increasingly sophisticated and include the use of counterfeit websites.
The bank's Chief executive Mark Mclean has had his own credit card details harvested by thieves and he says no-one is immune.
