Several major Australian banks experienced a major outage with customers unable to log into mobile apps this afternoon.

The affected internet banking services included Westpac, St George, ANZ and the Commonwealth Bank, as well as Australia Post and Allianz.

It was also reported Virgin Australia is also experiencing issues.

CommBank, ANZ and Westpac all tweeted it looked as though their services were returning to normal.

Tech expert Trevor Long said the cause is unknown.

“It’s quite a worrying one … never so many banks at one time which I think is causing a lot of concern,” he told Scott Emerson.

“It’s likely that one of the big content providers, they host all the websites, has gone down here in some way, whether that’s an attack, or a failure at their end, will take some time to work out.”

UPDATE: 4.15PM We are starting to see services return to normal following a tech outage that had widespread impact across businesses. Thank you for your patience – we’re sorry to cause any inconvenience to your afternoon.

— CommBank (@CommBank) June 17, 2021

Other victims – Macquarie Bank and Allianz Insurance#DNSOutage #InternetDown pic.twitter.com/ocK7jQT7dg

— Trevor Long (@trevorlong) June 17, 2021

Heads-Up customers: Most ANZ services look to be up and running but we’re continuing to monitor and investigate. We’re really sorry for any inconvenience caused by the recent issues. We’ll let you know of any further updates here. From the ANZ Social Media Team.

— ANZ Australia (@ANZ_AU) June 17, 2021

Press PLAY below to hear his thoughts on the major outage

Image: Getty