Compliance Letter to the Office of the Privacy Commissioner of Canada (“OPC”) By WestJet, an Alberta Partnership (“WestJet”)

The Office of the Privacy Commissioner of Canada (OPC) launched a Commissioner-initiated investigation (CII) into a privacy breach at WestJet that occurred on June 12, 2025. An unauthorized third party gained access to an employee's administrative account, bypassed multi-factor authentication, deployed ransomware, and exfiltrated data affecting approximately 5.1 million Canadian employees and customers. The breach exposed names, dates of birth, email addresses, mailing addresses, phone numbers, gender, travel booking information, and passport details, but no credit card numbers or SINs. WestJet took immediate containment measures, reported the breach, and provided direct and indirect notifications, credit monitoring, and identity theft protection services. WestJet has committed to further actions, including an external security assessment and providing a summary report to the OPC by August 7, 2026, to ensure the adequacy of its updated security safeguards and prevent future breaches. The CII will be discontinued upon the Commissioner being satisfied that WestJet has fulfilled all commitments.