DisclosureLens
MalwareHealthcareHealthcareRansomwareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPHIIdentity (basic)Government IDHealth (basic)Financial accountMediumContained

Harvard Pilgrim Health Care

bd_73394de7a4caf43f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 17, 2023

Filed

Aug 25, 2023

To disclose

19 weeks

Affected

Not disclosed

Linked

35 filings

Confidence

65%
Full breach record for Harvard Pilgrim Health Care14 incidents on file

Harvard Pilgrim Health Care experienced a ransomware incident affecting systems used to service clients, including UnitedHealthcare. Unauthorized access occurred between March 28, 2023, and April 17, 2023, with discovery on April 17, 2023. Data exfiltrated included names, addresses, SSNs, health insurance account info, and clinical information. Systems were taken offline, and forensic experts were engaged. Credit monitoring is offered.

Incident timeline

undetected · 20 days
discovery → filing · 19 weeks / 130 days

Mar 28, 2023

Begins

Apr 17, 2023

Discovered

Aug 25, 2023

Filed

vs. sector median

+6 wks slower

This filing is one of 35 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Show 6 more filingsup to 811d gap

Showing first 10 of 34 linked disclosures.

Filing propagation · 11 filings · 6 states

View merged incident ↗

Pattern: first filing Aug 25 (CA), last Nov 13 (MD) — a 811-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

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.