Australian authorities are bringing Optus, Singtel's local unit, to court over a cyberattack that resulted in data leak.
The Australian Communications and Media Authority (ACMA) has filed proceedings in the Federal Court of Australia against Optus Mobile.
Optus Mobile, according to ACMA, has breached the Australian Telecommunications (Interception and Access) Act 1979 for failing to protect the confidentiality of personally identifiable information of its customers from unauthorised interference or unauthorised access when the attack took place in September 2022.
"Optus Mobile intends to defend these proceedings. At this stage, Optus Mobile is not able to determine the quantum of penalties, if any, that could arise," says Optus on May 22.
"Optus has previously apologised to its customers and has taken significant steps, including working with the police and other authorities, to protect them," the company adds.
"As the matter is now before the Australian Courts, Optus Mobile will not be commenting further at this time," says Optus.
See also: Chinese group accused of hacking Singtel in telecom attacks (update)
Singtel shares closed at $2.40 on May 21, down 0.41%.
