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Ransomware Victim Healthcare

Sonrisas Dental Health

Ransomware attack by Bianlian Β· Disclosed March 31, 2025 Β· πŸ‡ΊπŸ‡Έ United States

sonrisasdental.org

Date Disclosed
Mar 31, 2025
2025
Threat Group
Bianlian
201 total victims
Country
πŸ‡ΊπŸ‡Έ United States
Industry
Healthcare

Incident Analysis

Sonrisas Dental Health was targeted by Bianlian ransomware, one of the most active ransomware groups in our database with 201 confirmed victims globally. The attack was disclosed on March 31, 2025, when Sonrisas Dental Health appeared on the group's dark web leak site.

Sonrisas Dental Health is based in United States , operating in the Healthcare sector. United States ranks #1 globally for ransomware attacks, with 8,498 victims in our 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 β€” all factors that increase ransom payment pressure.

Bianlian typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats β€” paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Jun 13, 2026 00:01 UTC.

Frequently Asked Questions

Was Sonrisas Dental Health attacked by ransomware?

Yes. Sonrisas Dental Health was listed as a victim of the Bianlian ransomware group on March 31, 2025. The organisation is based in United States and operates in the Healthcare sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Sonrisas Dental Health?

Sonrisas Dental Health was attacked by Bianlian ransomware. Bianlian is one of the most active ransomware groups, having claimed 201 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Sonrisas Dental Health ransomware attack occur?

The ransomware attack on Sonrisas Dental Health was disclosed on March 31, 2025. 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 Sonrisas Dental Health ransomware attack?

The specific data stolen from Sonrisas Dental Health 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, Sonrisas Dental Health likely held patient records, medical data, and personally identifiable information (PII).

How can organisations protect against Bianlian attacks?

To defend against Bianlian 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.