China's Huawei and ZTE have been banned from providing 5G technology equipment to Australia.
Huawei made a statement on Twitter Thursday saying that the Australian government had made the move despite the Chinese firm "safely and securely" delivering wireless technology in the country for nearly 15 years.
A spokesperson for Australia's Department of Communications and the Arts, which overseas telecoms regulations, did not say Huawei and ZTE had been banned specifically, but pointed CNBC toward a statement released Thursday regarding security guidance for Australian mobile carriers.
"The government considers that the involvement of vendors who are likely to be subject to extrajudicial directions from a foreign government that conflict with Australian law, may risk failure by the carrier to adequately protect a 5G network from unauthorized access or interference," part of the statement said, highlighting that the government feels both Chinese firms could post national security threats.
Huawei and ZTE were not immediately available for comment.