Are your bank details safe? Nearly 100,000 Westpac customers' private information is hacked in major cyber attack Westpac has confirmed cyber attack compromised information of PayID users Almost 100,000 users names and their mobile phone numbers were collected PayID is opt-in service so only those registered will have their details at riskBy Brett Lackey For Daily Mail Australia Published: 00:49 BST, 4 June 2019 | Updated: 00:51 BST, 4 June 2019 Viewcomments Nearly 100,000 Australian bank customers' personal details have have been put at risk in a cyber attack. The attack was on Westpac customers, specifically PayID users, with experts warning the data - customers' names and corresponding mobile phone numbers - could be used to commit fraud. PayID, which links a person's email address or mobile phone number to their bank account, allows the instant transfer of money between banks. Nearly 100,000 Australian bank customers' personal details have have been put at risk in a cyber attack (file picture) The system has a feature where users can enter a mobile phone number and it will search to see whether the number is registered on PayID and give you a name - similar to a phone book. Westpac confirmed its PayID system was compromised on Monday. 'Westpac can confirm we had detected mis-use of the [New Payments Platform's] PayID functionality and we took additional preventative actions which did not include a system shutdown,' a spokesman said. 'No customer bank account numbers were compromised as a result. There has been no further inappropriate activity detected.' According to The Sydney Morning Herald a confidential memo disclosed the attack to the financial sector. 'On 22 May 2019, Westpac noted that a high volume ([around] 600,000) of NPPA PayID lookups was made from 7 compromised Westpac Live accounts.' [Around 98,000] of the lookups successfully resolved to a short name and this was displayed to the fraudster,' the memo said. The memo went on to explain they believe the attack originated in the United States. It is unclear who has the stolen details and what they intend to do with the information. PayID is an opt-in service, meaning only customers who registered for the service will have their details on the platform. Westpac confirmed its PayID system was compromised on Monday Read more: Share or comment on this article: All rights reserved for this news site dailymail and under his responsibility