Freight forwarder Toll Group has shut down certain IT systems after suffering a cyber attack.
The Japan Post-owned company warned customers that as a precautionary measure, in response to a cyber security incident on Friday, it had deliberately shut down a number of systems across multiple sites and business units.
"Toll IT teams are working closely with global cyber security experts to resolve the issue," the company said.
"Toll is making progress with its recovery activities to restore our systems and Toll customer-facing applications.
"Our immediate focus is on bringing our systems back online in a controlled and secure manner. Business continuity plans have been activated to maintain customer service and operations.
"Staying focused on customers remains at the forefront of Toll’s priorities as we restore our services and we sincerely apologise for any inconvenience caused."