Privacy Impact Assessments for Telecommunications

Telecommunications carriers occupy a singular position in the Canadian privacy landscape. They hold metadata and communications records for millions of subscribers — call detail records, location data, billing information, network usage patterns — and they do so under a combination of federal privacy law and CRTC regulatory oversight that creates obligations not faced by most other sectors. The sensitivity of subscriber data is compounded by the carrier's infrastructure position: the same networks that carry consumer traffic also carry communications for banks, hospitals, and government agencies.

A Privacy Impact Assessment in the telecommunications context addresses risks that are specific to that infrastructure role. Subscriber location data, if improperly handled, reveals home addresses, medical appointments, and employment. Call detail records expose relationship networks. Network-level data can identify behavioural patterns that subscribers never consciously shared. PIPEDA requires meaningful consent for secondary uses of this data — and the question of what constitutes meaningful consent when data is collected passively as a byproduct of network operation is one that the Office of the Privacy Commissioner of Canada has examined closely.

The CRTC layer adds requirements around data retention for lawful interception, rules on secondary use of network data for product development or advertising, and obligations around customer notification and consent that are layered on top of — and sometimes in tension with — the PIPEDA baseline. A PIA that maps only one of these frameworks misses material obligations. Our assessments address both, tracing the points where they interact and identifying the gaps that arise at that intersection.

Privacy Horizon conducts PIAs for carriers, resellers, and the technology vendors that build on telecommunications infrastructure — billing platforms, customer management systems, network monitoring tools, and data analytics products that process subscriber data on behalf of carriers. For each, the assessment begins with a complete data flow map that captures the full scope of personal information processed, identifies the regulatory obligations triggered by each category of data, and produces documentation that satisfies both the OPC's accountability expectations and the CRTC's oversight requirements.

Our approach for Telecommunications

We trace personal information flows across subscriber management, billing, network operations, and data analytics systems, distinguishing between the PIPEDA obligations that apply to subscriber data generally and the CRTC-specific requirements around retention, secondary use, and consent for network data. Risk identification addresses SIM-swap and account takeover vulnerabilities, cross-border data flows to US technology infrastructure, and the adequacy of contractual protections governing how third-party vendors access subscriber information. Documentation is structured for both OPC and CRTC accountability purposes.