Breachesby GlyphFrederick Health
Disclosed Jan 27, 2025934,326 affectedConfirmed
Ransomware attack on Frederick Health exposes data of 934,326 patients
Maryland's Frederick Health said a ransomware attack detected on January 27, 2025 let an intruder copy files from a file share server containing patient names, SSNs, driver's license numbers, medical record numbers and insurance data; HHS lists 934,326 affected.
What is known
| People affected | 934,326 (as reported to HHS) |
|---|---|
| Disclosed | Jan 27, 2025 |
| Discovered | Jan 27, 2025 |
| Attack | Ransomware |
| Data exposed | NamesHealthAddressesDates of birthSocial Security numbersGovernment IDsInsurance |
| Sector | Healthcare · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
hacking to ransomwareby seedSource
["names","health"] to ["names","health","addresses","dob","ssn","government-id","insurance"]by seedSource
2025-03-28 to 2025-01-27by seedSource
empty to 2025-01-27by seedSource
empty to Maryland's Frederick Health said a ransomware attack detected on January 27, 2025 let an intruder copy files from a file share server containing patient names, SSNs, driver's license numbers, medical record numbers and insurance data; HHS lby seedSource
empty to Ransomware attack on Frederick Health exposes data of 934,326 patientsby seedSource
First recordedby backfillSource
First seen 2026-09-25 (HHS OCR), confirmed by HHS OCR. Record counts are as reported. Not legal advice.