AUSTRALIAN VISAS ARE REGULARLY CANCELLED FOR:
1. Breach of a visa condition (For example working without work rights or beyond your work limitation)
2. Ground up on which the visa was granted no longer exists (For example your employment has finished and you are on a 457 visa)
3. Change of circumstances (For example a relationship breakdown on a partner visa)
4. Providing false, misleading, incorrect information or bogus documents
5. Being of bad character (For example you have committed a criminal offence since your visa was granted)
6. Not a genuine entrant (For example you have a student visa but you are not studying).