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Tag: IMSI Catcher

Curated Canadian IMSI Catcher Resources

‘Untitled’ by Andrew Hilts

IMSI Catchers enable state agencies to intercept communications from mobile devices and are used primarily to identify otherwise anonymous individuals associated with a mobile device or to track them. These devices are also referred to as ‘cell site simulators’, ‘mobile device identifiers’, and ‘digital analyzers’, as well as by the brandnames such as ’Stingray’, DRTBox’, and ‘Hailstorm’. These surveillance devices are not new – their use by state agencies spans decades. However, the ubiquity of the mobile communications devices in modern day life, coupled with the plummeting cost of IMSI Catchers, has led to a substantial increase in the frequency and scope of IMSI Catcher use by government and non-government agents alike. The devices pose a serious threat to privacy given that they are highly intrusive, surreptitious, and subject to limited controls in relation to their licit and illicit sale or operation.

One of the challenges with understanding the current policy landscape around IMSI Catchers in Canada stems from different government agencies’ deliberate efforts to prevent the public from learning about whether agencies use such devices. Journalists and academics have tried to determine whether and how the devices are used over the course of approximately a decade; this means that information concerning their operation has unfolded over a significant length of time. Without a centralized resource to curate the successes and failures of these investigations it is often challenging for non-experts to understand the full context and history of IMSI Catchers’ operation in Canada.

Only recently have journalists, advocacy groups, and academics in North America learned about how their respective governments have historically, and presently, operated IMSI Catchers. Such revelations began around four years ago in the United States and within the past year and a half in Canada. Such revelations are the culmination of extensive preparatory work: though news articles and research reports appear more frequently, now, their existence today is predicated on the hidden labour that took place over the prior years.

For Canadians, the release of select court documents enabled more informed analysis of how these devices were used by federal, provincial, and municipal agencies. Such information was drawn on to prepare a report on IMSI Catchers that I wrote with Tamir Israel last year, in which we canvassed, collated, and analyzed what was technically understood about how IMSI Catchers operate, as well as the challenges Canadians have faced using freedom of information request to learn more about the technology. That report also included legal analyses of different ways of authorizing the devices’ operation and the Charter implications of their operation. Furthermore, in recent weeks the RCMP finally admitted to the public that it has used IMSI Catchers after previously claiming that any revelation of whether and how they used the devices would infringe on national security or ongoing investigations. Many other agencies have since followed suit, also informing the public whether they possess and operate IMSI Catchers in the course of their investigations.

To help interested members of the public, journalists, advocacy and activist groups, and fellow academics, I have collated a list of IMSI Catcher-related resources that pertain to the Canadian situation. This listing includes the most important primary and secondary documents to read to understand the state of play in Canada. Some of the resources are produced by academics and technologists, some focus on technology or policy or law, and others encompass the major news stories that have trickled out about IMSI Catchers over the past several years. If you believe that I have missed any major documents feel free to contact me.

Access the IMSI Catcher in Canada Resources

IMSI Catcher Report Calls for Transparency, Proportionality, and Minimization Policies

imsi-catcher-coverThe Citizen Lab and CIPPIC released a report, Gone Opaque? An Analysis of Hypothetical IMSI Catcher Overuse in Canada, which examined the use of devices that are commonly referred to as ‘cell site simulators’, ‘IMSI Catchers’, ‘Digital Analyzers’, or ‘Mobile Device Identifiers’, and under brand names such as ‘Stingray’, DRTBOX, and ‘Hailstorm’. IMSI Catchers are a class of of surveillance devices used by Canadian state agencies. They enable state agencies to intercept communications from mobile devices and are principally used to identify otherwise anonymous individuals associated with a mobile device and track them.

Though these devices are not new, the ubiquity of contemporary mobile devices, coupled with the decreasing costs of IMSI Catchers themselves, has led to an increase in the frequency and scope of these devices’ use. Their intrusive nature, as combined with surreptitious and uncontrolled uses, pose an insidious threat to privacy.

This report investigates the surveillance capabilities of IMSI Catchers, efforts by states to prevent information relating to IMSI Catchers from entering the public record, and the legal and policy frameworks that govern the use of these devices. The report principally focuses on Canadian agencies but, to do so, draws comparative examples from other jurisdictions. The report concludes with a series of recommended transparency and control mechanisms that are designed to properly contain the use of the devices and temper their more intrusive features.

The report is structured across four sections:

  • Section One provides an overview of the technical capabilities of IMSI Catchers.
  • Section Two focuses on civil society and journalists’ efforts to render transparent how IMSI Catchers are used.
  • Section Three examines the regulation of IMSI Catchers and avenues towards lawful regulation of their use.
  • Section Four sets out best practices that should be incorporated into a framework governing IMSI Catcher use.

In more detail, Section One provides an overview of the technical capabilities of IMSI Catchers. The report principally focuses on how the devices can be used in ‘identification mode’, where they intercept digital numbers that are unique to mobile devices. IMSI Catchers exploit weaknesses in the design of mobile communications systems to induce mobile devices to transmit these unique numbers that, typically, are only sent to telecommunications carriers. From a privacy perspective, the report argues that IMSI Catchers are inherently intrusive: by design, they capture mobile identifiers from all phones in range, leading to significant collateral privacy impact that can affect the privacy of thousands of non-targets for each individual legitimate target.

Section Two focuses on transparency efforts associated with IMSI Catchers, and how states have routinely sought to prevent information about IMSI Catchers from reaching the public record. After highlighting some of the hard-fought successes to bring documents to the public record in the United States, in particular, the report examines comparable efforts to uncover IMSI Catchers’ use in Canada and these efforts’ comparative successes and failures. In doing so, a case analysis is conducted where the Toronto Police Services Board successfully (and inappropriately) prevented documents from becoming public. The report critiques a number of the justifications that are frequently advanced by state agencies seeking to prevent information related to IMSI Catchers from becoming public. Furthermore, it argues that providing some details on IMSI Catcher use will not undermine the investigative utility of the devices, and that there is substantial public interest that should compel authorities to disclose documents regardless of whether they affect investigative utility. Furthermore, disclosure of such documents is needed to evaluate whether the possession of the devices is inconsistent with the Radiocommunications Act, the Privacy Act, and perhaps the Charter. Equally seriously, refusing to officially acknowledge IMSI Catcher use in the face of a growing body of documents demonstrating their use threatens to undermine public confidence that the devices are being used lawfully and in a manner that is proportionate and minimized their impact on non-targeted members of the public.

Section Three examines the regulation of IMSI Catchers and avenues towards the lawful authorization of their use. After surveying German and American regulatory processes to understand gaps in the Canadian context, the report explores Canada’s ambitious statutory framework for electronic surveillance. Doing so explicates the legal avenues state agencies can exercise to authorize their use of IMSI Catchers. This section reveals how a range of overlapping powers might apply to IMSI Catcher authorization, and that this ambiguity might let agencies deploy IMSI Catchers using powers offering minimal privacy protection. The section concludes by examining the Charter implications of IMSI Catcher uses, and rejects possible justifications of IMSI Catcher deployment which lack prior judicial authorization. A series of safeguards and conditions on the use of IMSI Catchers, such that their operation does not amount to a constitutionally impermissible search, wraps up this section.

Section Four sets out best practices that should be incorporated into a framework governing IMSI Catcher use. The section recommends that IMSI Catcher use by state agencies be subject to comprehensive transparency mechanisms, including annual statistical reporting on use, an individual notice requirement, and compliance with standard reporting obligations typically applied to radio devices owned by state agencies. It further argues for the criminalization of unauthorized uses of IMSI Catchers. Such authorization should be subject to a strict regime that is linked with demonstrating their investigative necessity, including a “serious crimes” provision that limits IMSI Catchers’ use to investigate only the most severe offences. In addition to proportionality measures, targeting and minimization procedures should be imposed to limit the collateral impact of deployment on innocent third-parties.

The report’s Conclusion highlights core findings and also emphasizes the importance of privacy in liberal democratic societies.

We hope that this report will contribute to the growing discussion and debate concerning how, and the appropriateness of, state agencies’ use of IMSI Catchers. Ultimately, it is in the government’s and citizens’ best interest for state agencies to be more transparent and accountable for how they use IMSI Catchers in the course of conducting investigations.

DOWNLOAD FULL REPORT (English) // DOWNLOAD EXECUTIVE SUMMARY (French)

Project Support

The authors would like to graciously thank a number of sources whose generous funding made this report possible: the Open Society Foundation, Frederick Ghahramani, a Social Sciences and Humanities Research Council (SSHRC) Postdoctoral Fellowship Award, and the Munk School of Global Affairs at the University of Toronto. Furthermore, the authors are grateful for in-depth substantive input on the December 2015 draft of this document from Professor Ron Deibert and Sarah McKune, to Adrian Dabrowski and to participants of Citizen Lab Summer Institute 2016 for key input on technical questions raised by this paper and to Lex Gill for extensive substantive additions and edits. Responsibility for any errors or omissions remains with the authors.

Authors

Christopher Parsons

Dr. Christopher Parsons received his Bachelor’s and Master’s degrees from the University of Guelph, and his Ph.D from the University of Victoria. He is currently the Managing Director of the Telecom Transparency Project and a Research Associate at the Citizen Lab, in the Munk School of Global Affairs.

Tamir Israel

Tamir is staff lawyer with the Samuelson-Glushko Canadian Internet Policy & Public Interest Clinic (CIPPIC) at the University of Ottawa Faculty of Law, where he conducts research and advocacy on various digital rights-related topics, with a focus on online privacy and anonymity, net neutrality, intellectual property, intermediary liability, spam, e-commerce, and consumer protection generally.

Public Submission on IMSI Catchers

5047039173_36fbdc9523_oOn October 14, 2015 the Pivot Legal Society in British Columbia filed a complaint with the Office of the Information and Privacy Commissioner (OIPC) of British Columbia concerning the Vancouver Police Department’s (VPD) refusal to disclose any documents concerning the department’s use of IMSI Catchers. IMSI Catchers, also known as Cell Site Simulators or Mobile Device Identifiers, are designed to impersonate cellular telecommunications towers. The devices are used to collect identifiers and potentially content transmitted from mobile phones in the device’s vicinity. In response to Pivot Legal Society’s complain Tamir Israel (from CIPPIC) l and I intervened on behalf of Open Media to argue that VPD ought to be compelled to disclose documents they possessed concerning their use of IMSI Catchers.

Our intervention begins by outlining how IMSI Catchers technically function. Next, we demonstrate how the test for investigative necessity advanced by VPD simply does not apply to responsive records in light of the significant general information regarding IMSI Catcher use. Finally, we argue that even if disclosure of responsive records will, to some degree, undermine the utility of IMSI Catchers as an investigative tool, disclosure must still occur. Confirmation of IMSI Catcher use is a necessary precursor to informed public debate and to the proper legal constraint of an invasive surveillance tool and is therefore in the public interest.

Download the Intervention (Alternate Link)

Authors

Tamir Israel

Tamir is staff lawyer with the Samuelson-Glushko Canadian Internet Policy & Public Interest Clinic (CIPPIC) at the University of Ottawa Faculty of Law, where he conducts research and advocacy on various digital rights-related topics, with a focus on online privacy and anonymity, net neutrality, intellectual property, intermediary liability, spam, e-commerce, and consumer protection generally.

Christopher Parsons

Dr. Christopher Parsons received his Bachelor’s and Master’s degrees from the University of Guelph, and his Ph.D from the University of Victoria. He is currently the Managing Director of the Telecom Transparency Project and a Postdoctoral Fellow at the Citizen Lab, in the Munk School of Global Affairs.

Photo credit: Mobile Phone Tower by Michael Coghlan (CC BY-SA 2.0) https://flic.kr/p/8FZoUM