Thomson Reuters Canada Limited’s C‑Track, the cloud‑based case‑management system used by the Court of Appeal for Ontario, the Ontario Superior Court of Justice and the Ontario Court of Justice, was compromised. The company detected unauthorized activity on June 30, but its investigation revealed that the intrusion began in March.

Ontario’s chief justices – Michael H. Tulloch, Patrick J. Boucher and Sharon M. Nicklas – issued a public warning on Sept 2, stating that personal information contained in court records may have been stolen in the cyberattack.

The notice said that names, driver’s licence numbers, social‑security numbers and even medical information could have been accessed, although the exact number of affected files and the time span of the records remain unclear.

In response, Thomson Reuters has installed additional cybersecurity safeguards, confirmed that its products and services are still fully operational, and is offering free credit‑monitoring services through a dedicated call centre for anyone who might be impacted.

Anyone who has been involved in a court proceeding in Ontario should monitor their credit reports and be prepared for possible identity‑theft attempts, because the breach illustrates how a single digital platform can expose sensitive personal data across multiple courts.