high severity November 22, 2025 · 3 min read Unverified claim — what this is

St. Joseph's Healthcare Hamilton Listed by Rhysida Ransomware Group

If you were named in this filing, here’s what is being claimed, and what it would mean for you.

St. Joseph's Healthcare Hamilton was listed on Rhysida's leak site. Rhysida claims to have stolen internal data. This is the group's claim, not a confirmed finding.

St. Joseph's Healthcare Hamilton Listed by Rhysida Ransomware Group

On November 22, 2025, St. Joseph's Healthcare Hamilton appeared on the leak site of the rhysida ransomware group after the hospital's internal files were allegedly exfiltrated during a ransomware attack.

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What Public Reporting Shows

Public reporting indicates that the rhysida group posted evidence of the breach on its leak site, listing St. Joseph's Healthcare Hamilton as a victim. The exposed material consists of internal files that the attackers claim to have taken before encrypting systems. No confirmed total of affected individuals has been released, and the precise volume or sensitivity of the stolen documents remains unclear from available reporting. The hospital, a major healthcare provider in Ontario, Canada, has not yet issued a detailed public statement on the scale of the incident.

Why This Matters for You and Your Family

When a hospital suffers a breach, the people most at risk are ordinary patients and their families. Medical records, appointment details, insurance information, and personal identifiers can appear in the stolen data. Once that information leaves the hospital's control, it can be sold, published, or used to commit identity theft, insurance fraud, or targeted scams. Your health history is especially sensitive because it can be leveraged for blackmail or to impersonate you when dealing with pharmacies, government agencies, or financial institutions.

Even if your name has not surfaced yet, the delay between a breach and its public discovery means your information could already be circulating among criminals. Families often share the same address, phone number, or email across records, so one person's exposure can quickly affect everyone at home.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

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value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to Rhysida · 288 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed November 22, 2025

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

Threat-actor tracker

Rhysida — 288 incidents tracked

Every breach we've attributed to Rhysida, in one running log. See who else they've hit →

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