Singapore Telecommunications Ltd. said its Australian unit Optus is investigating a possible cyberattack that may have resulted in unauthorized access to current and former customers’ information.
According to a statement from SingTel to the Singapore exchange, customer data such as names, birth dates, phone numbers, and email addresses may have been exposed in a recent attack. The attack may also have exposed the addresses and identification-document details of a smaller number of customers.
"As soon as we became aware of the attack, we took steps to block it and launched an investigation," Optus CEO Kelly Bayer Rosmarin said in a statement. "Although not everyone may be affected, and our investigation is not yet complete, we want all of our customers to be aware of the situation so they can take precautions."
Optus has announced that it is working with the Australian Cyber Security Centre to mitigate risks to customers, and has also notified the Australian police, the Office of the Australian Information Commissioner and key regulators. Optus services, including mobile and home internet, are not affected and the company says its services remain safe to use.
Australian markets are closed on Thursday in observance of a national public holiday commemorating Queen Elizabeth II.
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