China cyber attack on weather bureau: ABC

The Bureau of Meteorology has had its sensitive systems compromised by a major cyber attack being blamed on China.

The ABC reports the breach is "massive", with the bureau owning one of the country's largest supercomputers.

Its systems have a link to the Department of Defence at Russell Offices in Canberra, the report says.

In a statement the bureau said it did not comment on security matters.

"Like all government agencies, we work closely with the Australian government security agencies," it said.

"The bureau's systems are fully operational and the bureau continues to provide reliable, on-going access to high-quality weather, climate, water and oceans information to its stakeholders."