Live tracker · Updated Sep 1, 2026

The Worst Breaches of 2026 (So Far)

The year's largest confirmed data breaches, ranked by records exposed. This list updates itself automatically as new disclosures go public.

Ranked by records exposed

2
high · dental · Jan 2026

Pecan Tree Dental (Grand Prairie, TX)

13Krecords exposed

Cybersecurity incident around January 11, 2026 affecting 13,300 individuals. Submitted to the HHS Office for Civil Rights Breach Portal on January 26, 2026. Third-party threat reports attributed the event to a ransomware claim. The practice is investigating and has not confirmed access or misuse of patient data.

3
high · dental · Jan 2026

Tampa Bay Dental Implants & Periodontics

6Krecords exposed

Unauthorized access detected January 19, 2026. Ransomware encrypted files on a legacy server containing a backup of electronic medical records. Patient data exposed: names, contact information, birth dates, treatment notes, clinical histories. SSNs exposed for a limited number of individuals.

View every 2026 breach we've indexed →

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