Skip to main content
Live Webinar with SANS (June 25)— Agentic CTI Automation for Fun & ProfitRegister Free
Mallory
Back to intelligence
breach-disclosure-notificationcritical-infrastructure-threatmass-credential-exposurephishing-campaign-intelligence

London Hydro Discloses Customer Data Exposure After Security Incident

Updated 8h agoFirst seen Jun 22, 20262 sources

London Hydro, a Canadian utility serving more than 160,000 customers, disclosed a security incident that may have exposed customer personal and account information. The potentially affected data includes names, home and service addresses, email addresses, phone numbers, account and billing numbers, pricing plans, contract start dates, and meter information. The company said banking details, payment card data, dates of birth, and government-issued identification numbers were not involved, and it has begun notifying affected individuals.

The utility has not disclosed how the intrusion occurred, whether data was exfiltrated, how many customers were affected, or whether ransomware, extortion, third-party systems, or operational technology played a role. London Hydro warned that the exposed account details could make phishing, impersonation, and fraudulent billing scams more convincing, and advised customers to watch for suspicious communications, unexpected bills, unfamiliar account activity, and requests to change payment arrangements.

Share:
London Hydro Discloses Customer Data Exposure After Security Incident
Stay ahead

Get ahead of threats like this

Mallory correlates global threat intelligence with your attack surface — know if you’re exposed before adversaries strike.

EVENT TIMELINE

How this story unfolded

2 events from the most recent confirmed update back to the earliest known activity.

2 EVENTS
Jun 22, 20261d ago

London Hydro begins notifying affected customers

The utility said it has started notifying affected individuals about the incident and advised them to monitor for suspicious communications, unfamiliar account activity, unexpected bills, and fraudulent payment-change requests. The company did not disclose how many customers were affected or whether data was exfiltrated.

Canadian utility fesses up to data breach, but key details remain off-grid

London Hydro discloses customer data security incident

London Hydro disclosed a data security incident that may have exposed some customers' personal and account information, including names, addresses, contact details, account and billing numbers, service addresses, pricing plans, contract start dates, and meter information. The utility said banking details, payment card data, dates of birth, and government-issued ID numbers were not involved.

Canadian utility fesses up to data breach, but key details remain off-grid
LINKED ENTITIES

Related entities

Vulnerabilities, threat actors, malware, products, organizations, and breaches Mallory has linked to this story.

5 LINKEDOpen in app
Organizations
4 linked
London HydroThe RegisterTescoBroadcom
Breaches
1 linked
LONDONHYDRO-2026-06
The operational view lives in Mallory

See the full picture, correlated to your attack surface.

This page covers what’s public. Mallory adds the parts that aren’t — which of your assets are affected, which threat actors are using it right now, which detections to deploy, and what to do next.
Exposure mapping

Map indicators from this story to your assets and identify affected systems in minutes.

Threat actor evidence

Every observed campaign, victim, and pivot linked to actors named in this story.

Associated malware

Malware, exploits, and IOCs connected to the activity described here.

Detection signatures

YARA, Sigma, and Snort rules deployed to your SIEM as soon as they’re published.

Scheduled alerts

Get matching new stories delivered to your team as they break — not the next morning.

AI threads

Ask questions about this story and take action on the answers.

London Hydro Discloses Customer Data Exposure After Security Incident | Mallory