Over a thousand Commonwealth and ANZ bank customers have been caught up in a fake banking app scam, after downloading malicious apps masquerading as real banking services.

The fake apps went undetected for weeks, phishing credit card and bank information, as well as other personal details from unaware customers.

Whilst Google cannot confirm the number of people who have handed over personal information to these apps before they were removed from the app stores, the number is suspected to be in the thousands.