
Special report to Parliament: Investigation of unauthorized disclosures and modifications of taxpayer personal information at the Canada Revenue Agency
The Office of the Privacy Commissioner of Canada (OPC) launched a systemic investigation into the Canada Revenue Agency (CRA) following media reports and a complaint regarding widespread unauthorized disclosures and modifications of taxpayer personal information. The investigation, a Special Report to Parliament, examined whether the CRA had adequate safeguards to protect taxpayer data from identity theft and fraudulent activities. The OPC found that the CRA contravened subsections 6(2) and 8(2) of the Privacy Act due to shortcomings in its prevention, monitoring, detection, remediation, and governance practices. While acknowledging the CRA's efforts to improve its security posture, the OPC identified specific weaknesses, such as delayed implementation of mandatory multi-factor authentication (MFA) and insufficient tracking of individual breaches. The OPC issued nine recommendations to the CRA, covering areas like strengthening MFA, enhancing phone authentication, adopting zero-trust principles, improving attack surface management, and refining breach tracking and governance. The CRA accepted eight recommendations in full and one in part, leading to a "well-founded and conditionally resolved" outcome.
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