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In April, the Telecommunications (Interception and Access) Amendment (Data Retention) Act 2015 (Cth) received assent. The legislation mandates that, in general, telecommunication companies and internet service providers must store their customers metadata for a period of two years from the date of its creation.
The Attorney General’s office has called on Telcos to increase their obligations in relation to the collection and storage of metadata in light of Telcos retaining less data and keeping it for a shorter period of time. The Attorney General has indicated the absence of such a regime is ‘degrading the investigative capabilities of law enforcement and security agencies and, in some cases, has prevented serious criminals from being brought to justice’.1
Service providers that use communications infrastructure in Australia to operate any of their services may be subject to data retention obligations. Service providers include: licenced carriers, carriage service providers and internet service providers. Under the Data Retention Act, these service providers must keep a limited set of metadata which is information about the circumstance of a communication for two years. Importantly, it is not the content of the communication and web-browsing history is specifically excluded from the scheme. The legislation also requires service providers to secure the stored data by encrypting it and preventing unauthorised access. The implication of the new scheme places further responsibilities on service providers with the Part 5-1A requiring all service providers that collect and retain telecommunications data under the data retention scheme to comply with the Privacy Act in relation to that data.
The Government has estimated the upfront capital cost of the regime to all of business to be between $188.8 million and $319.1 million.2
Metadata is information about a communication (the who, when, where and how)—not the content or substance of a communication (the what). The set of metadata required to be retained and secured under the Data Retention Act is defined by reference to the following six types of information:
The Australian Government is not requiring Telcos to retain a person’s web-browsing history or any data that may amount to a person’s web-browsing history. The retention relates to ‘data about data’, not content.
In May, the Information Commissioner, Timothy Pilgrim made a determination that indicates that metadata may be considered ‘personal information’ for the purposes of the Privacy Act 1988 (Cth).3 Relevantly, the decision signifies that the metadata stored under the Data Retention Act may also need to be treated as ‘personal information’ under the Privacy Act as well as the Telecommunications Consumer Protection Code. The Commissioner seems to have taken the view that metadata will be ‘personal information’ if:
The Attorney General’s office has advised that data retained by industry under the mandatory data retention regime is protected as personal information for the purposes of the Privacy Act and the Australian Privacy Principles (APPs) and as such, “the Privacy Commissioner will assess industry compliance with the APPs, as well as monitoring industry’s non-disclosure obligations under the Telecommunications Act”.4
In August the Office of the Australian Information Commissioner (OAIC) released a privacy business resource intended to assist Telcos to comply with their obligations in respect of the storage and management of metadata.5
This article was written by Caitlin Cross, Solicitor, Melbourne.
The contents of this publication are for reference purposes only and may not be current as at the date of accessing this publication. They do not constitute legal advice and should not be relied upon as such. Specific legal advice about your specific circumstances should always be sought separately before taking any action based on this publication.
© Herbert Smith Freehills 2025
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