> The Act requires CSPs to preserve stored communications at the request of certain domestic agencies, or the Australian Federal Police acting on behalf of certain foreign countries, in advance of a warrant to access the information being issued.

> ...

> There are two types of preservation notices—domestic (‘which cover stored communications that might relate either to a contravention of certain Australian laws or to security’) and foreign (‘which cover stored communications that might relate to a contravention of certain foreign laws’).

> In turn, there are two types of domestic preservation notices—historic (‘which cover stored communications held by the carrier on a particular day’) and ongoing (‘which cover stored communications held by the carrier in a particular 30-day period’).

> A foreign preservation notice only covers stored communications held by the carrier on a particular day. The Ombudsman and the Inspector-General of Intelligence and Security will have oversight in relation to preservation notices.