Calgary Public Library

Calgary Public Library operates as a public library system serving the city of Calgary, Alberta, Canada. It provides lending services for books, magazines, audiovisual materials, and digital resources such as e-books and online databases. The library offers free public access to computers, internet connectivity, and wireless networking at its branches. It delivers a variety of educational and cultural programs for children, teens, and adults, including story times, workshops, and author events. Meeting rooms and community spaces are made available for local groups and organizations to host activities.

The institution maintains extensive collections that include personal information of patrons, such as names, addresses, and, in some cases, payment details linked to library accounts. An expert cited in news coverage noted that libraries often possess large repositories of personal data while historically maintaining weaker security measures compared to other sectors. On October 11, 2024, Calgary Public Library experienced a cybersecurity breach that led to the immediate closure of all physical locations and the deactivation of servers and public computer access. In response, the library prioritized investigating the breach’s scope and acknowledged potential risks to patron data, including names, addresses, and possible payment details. The disruption forced the cancellation or relocation of scheduled events, exemplified by a partner organization having to move a festival presentation as a precaution. Operational impacts persisted with branches remaining closed indefinitely while further updates and remediation efforts were underway.