Breachesby GlyphEsse Health
Disclosed Jun 20, 2025521,167 affectedConfirmed
Esse Health says April cyberattack exposed 263,000 patients
St. Louis physicians group Esse Health said a cybercriminal accessed its network in April 2025, disrupting systems from April 21, and stole patient personal and health data; over 263,000 people were notified.
What is known
| People affected | 521,167 (as reported by the organization) |
|---|---|
| Disclosed | Jun 20, 2025 |
| Discovered | Apr 21, 2025 |
| Happened | Apr 21, 2025 |
| Attack | Hacking |
| Data exposed | NamesHealthDates of birthAddressesInsuranceOther |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
HHS OCR breach report: Esse Health (Healthcare Provider, MO)Esse Health says recent data breach affects over 263,000 patientsVermont Attorney General: 2025-09-10 Esse Health Data Breach Notice to ConsumersVermont Attorney General: 2025-06-30 Esse Health Data Breach Notice to ConsumersIndiana Attorney General 2025 data breach report: Esse Health
Notices filed
History of this record
263601 to 521167by backfillSource
empty to 2025-04-21by backfillSource
empty to https://ago.vermont.gov/document/2025-06-30-esse-health-data-breach-notice-consumersby backfillSource
empty to https://ago.vermont.gov/document/2025-09-10-esse-health-data-breach-notice-consumersby backfillSource
["names","health"] to ["names","health","dob","addresses","insurance","other"]by seedSource
hhs to organizationby seedSource
23671 to 263601by seedSource
empty to 2025-04-21by seedSource
empty to St. Louis physicians group Esse Health said a cybercriminal accessed its network in April 2025, disrupting systems from April 21, and stole patient personal and health data; over 263,000 people were notified.by seedSource
empty to Esse Health says April cyberattack exposed 263,000 patientsby seedSource
First recordedby backfillSource
First seen 2026-09-25 (HHS OCR), confirmed by HHS OCR. Record counts are as reported. Not legal advice.