Thank you very much, government ..
.. says practically every software developer in Oz.
How on earth is any Oz code cutter going to prove their code isn't fitted with a backdoor if that has effectively become a legal requirement? Way to go to pretty much nuke an industry, and to promote the use of non-Oz services*.
* Someone in Australia can still be served with a warrant for access to their data, but surveillance will be interesting when everyone reverts to using non Australian software.
Unbelievably stupid decision IMHO.