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Cyber Threat
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Ransomware victim Healthcare

sunnybrook.ca

Listed by Scarlettgroup on · organisation based in Canada

sunnybrook.ca

Disclosed
Oct 29, 2026
Leak-site listing date
Threat group
Scarlettgroup
8 victims listed
Country
Canada
#3 most targeted
Sector
Healthcare

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Scarlettgroup. Figures and technique mappings are quoted from the source data, not inferred.

About sunnybrook.ca

Sunnybrook Health Sciences Centre is a leading Canadian teaching and research hospital based in Toronto, providing specialized healthcare services in trauma, cancer, cardiac care, rehabilitation, and emergency medicine.

Source record: ransomware.live

About the Scarlettgroup group

Scarlettgroup has listed 1 victims since October 2026.

Incident analysis

sunnybrook.ca was listed by Scarlettgroup ransomware, a group with 8 victims recorded in this database. The listing appeared on the group's leak site on October 29, 2026.

sunnybrook.ca is based in Canada and operates in the Healthcare sector. Canada ranks #3 worldwide for ransomware disclosures, with 981 victims in this database.

Sector context. Healthcare organisations are high-value ransomware targets because patient data is extremely sensitive, regulatory penalties for breaches are severe, and operational downtime can threaten patient safety — all factors that increase ransom payment pressure.

Scarlettgroup typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was sunnybrook.ca attacked by ransomware?

Yes. sunnybrook.ca was listed as a victim of the Scarlettgroup ransomware group on October 29, 2026. The organisation is based in Canada and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked sunnybrook.ca?

sunnybrook.ca was attacked by Scarlettgroup ransomware. Scarlettgroup is one of the most active ransomware groups, having claimed 8 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the sunnybrook.ca ransomware attack occur?

The ransomware attack on sunnybrook.ca was disclosed on October 29, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the sunnybrook.ca ransomware attack?

The specific data stolen from sunnybrook.ca has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Healthcare organisation, sunnybrook.ca likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Scarlettgroup attacks?

To defend against Scarlettgroup and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.