London Hydro investigating data breach affecting some customer accounts

Cbc.Ca • June 21, 2026

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'Data security incident' impacts , account information, but no financial data

Image | LONDON HYDRO DATA BREACH

Caption: London Hydro's headquarters on Horton Street in London, Ont., on Sept. 26, 2025. (Matthew Trevithick/CBC)

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

London Hydro Reports Customer Data Exposure in Security Incident London Hydro, a Canadian utility, disclosed a security incident affecting customer data, potentially exposing names, addresses, email addresses, phone numbers, account and billing numbers, service addresses, pricing plans, contract start dates, and meter information. The company confirmed that sensitive financial data, including banking information and payment card details, were not involved. The exact attack method, whether data was exfiltrated, and the number of affected customers remain unclear. London Hydro has begun notifying impacted individuals and has advised them to monitor for suspicious communications and unfamiliar account activity. The utility has not provided details on how the intrusion occurred or if operational technology systems were affected. 4 sources 37

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