Canvas Teaching Platform Attacked: When Cloud Encryption is Down to a Pane of Glass, What's Left to Protect Your Data?
In May 2026, five local organizations, including the Hong Kong Polytechnic University, the Hong Kong University of Science and Technology and the Hong Kong Academy for Performing Arts, notified the Office of the Privacy Commissioner for Personal Data (PCPD) of the leakage of information from the Canvas online teaching platform, which is used by more than 9,000 institutions around the world, after a suspected large-scale intrusion. The names and email addresses of over 42,000 PolyU students and staff fell into the hands of hackers overnight.












