From www.themandarin.com.au: Complaints regarding compromised client records at the Australian Taxation Office have surged by 935% from 2020-21 to 2023-24, largely due to significant consumer data breaches and ransomware attacks, particularly from Russia.

The Australian National Audit Office reported this increase, indicating that the ATO took measures to protect client information in response to the breaches.

Complaints primarily involve clients needing to unlock accounts and delays in processing returns due to identity verification challenges linked to the breaches.