Huawei and ZTE’s ban from Australia’s 5G network in August has been “supported by technical advice”, according to a spy agency.

Australian Signals Directorate (ASD) chief, Mike Burgess, says the Chinese companies were excluded as they were classified “high-risk vendors” that could compromise the security of the network.

Mr Burgess says the decision was “not taken lightly” as “getting security right for critical infrastructure is paramount”.