Harvard Pilgrim Health Care
bd_826a042bdbb8ed5e · schema v1 · pii pii-v1
Full breach record for Harvard Pilgrim Health Care →14 incidents on fileHarvard Pilgrim Health Care reported a ransomware incident discovered on April 17, 2023, affecting systems used to service clients including UnitedHealthcare. Unauthorized access occurred between March 28 and April 17, 2023, resulting in data exfiltration. The files contained personal and protected health information. The company engaged forensic experts, notified law enforcement, and implemented additional cybersecurity safeguards. Credit monitoring services were offered to affected individuals.
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Incident timeline
Mar 28, 2023
Begins
Apr 17, 2023
Discovered
Jun 21, 2023
Scope determined
Aug 24, 2023
Filed
vs. sector median
+6 wks slower
Linked disclosures
Why this link?Regulatory filings (10) · sorted by filing gap
- Maine State AGbd_6228e5282fce12112024-03-27 · +216dVerified by operator
- Delaware State AGbd_653dd03a96a630572024-03-27 · +216dVerified by operator
- New Hampshire State AGbd_c2298923021059572024-03-27 · +216dVerified by operator
- Delaware State AGbd_3d033309f7ace5eb2024-10-03 · +406dVerified by operator
Show 6 more filings ↓Show fewer ↑up to 812d gap
- Maine State AGbd_59b7d4f12c5ff2b62024-10-03 · +406dVerified by operator
- California State AGbd_7d6e82e2351b46c62024-10-03 · +406dVerified by operator
- New Hampshire State AGbd_9b1c4d63a64d8aab2024-10-03 · +406dVerified by operator
- California State AGbd_6137e2525e0f88892025-01-21 · +516dVerified by operator
- Vermont State AGbd_e97c70caa0c2a5f52025-01-21 · +516dVerified by operator
- Maryland State AGbd_10d522138bb443a92025-11-13 · +812dVerified by operator
Showing first 10 of 34 linked disclosures.
Filing propagation · 11 filings · 6 states
View merged incident ↗Pattern: first filing Aug 24 (NH), last Nov 13 (MD) — a 812-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Cascade drawn from the first 10 linked disclosures of 34 — the full spread may be wider.
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.