Ransomware Healthcare / Dental · United States · January 2026

Pecan Tree Dental

Analysis of the Pecan Tree Dental ransomware attack by Sinobi group affecting 13,300 individuals.

Records Affected

13,300 individuals

Attack Type

Ransomware

Location

United States

Data types exposed

Protected health information (specific fields not publicly detailed)

What Happened

In January 2026, Pecan Tree Dental disclosed a ransomware attack affecting 13,300 individuals. The Sinobi ransomware group has been linked to the incident.
The compromised data reportedly includes health data. HIPAA breach notification requirements apply.

Timeline

  • January 2026 — Pecan Tree Dental discloses ransomware attack by Sinobi affecting 13,300 individuals

Threat Actor Profile

Sinobi is a lesser-known ransomware group that has been observed targeting small healthcare practices, where security resources are typically limited.

Impact and Risk Assessment

For Individuals

13,300 patients had their dental health data exposed, potentially including treatment records and insurance information.

For Organisations

Small dental practices face proportionally higher impact from ransomware, as the operational and financial costs of response can be devastating for a small business.

Regulatory Context

HIPAA breach notification requirements apply. Small healthcare practices are not exempt from HIPAA compliance obligations.

What Should You Do?

For Individuals

  • If you are a patient of Pecan Tree Dental, monitor your explanation of benefits for signs of medical identity fraud.

For Security Professionals

  • Small dental and healthcare practices should consider managed security services and cyber insurance to mitigate ransomware risk within their budget constraints.

Learnings and Recommendations

Dental practices are increasingly targeted by ransomware groups due to the sensitive health data they hold combined with typically limited security resources.
This advisory summarises a publicly reported cybersecurity incident for educational purposes. Information is sourced from publicly available reports and may include claims that are unverified or disputed. Inclusion does not imply fault or negligence by the affected organisation.