The Australian Bureau of Meteorology has apparently been hacked.

China blamed for 'massive' cyber attack on Bureau of Meteorology computer China is being blamed for a major cyber attack on the computers at the Bureau of Meteorology, which has compromised sensitive systems across the Federal Government. Key points: ABC told there is little doubt the "massive" breach came from China

Motivation for attack could be commercial, strategic or both

Bureau provides critical information to a host of agencies, including link to Defence Department

Could "take years and cost hundreds of millions of dollars to fix"

This seems like a bit of an odd target, doesn't it?