MalwareHealthcareHealthcareRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedEmployee Data InvolvedMulti-Stage ChainIdentity (basic)Government IDHealth (basic)Financial accountPHIHighActive

Harvard Pilgrim Health Care

bd_c0a7b8e1d963e216 · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 17, 2023

Filed

Jun 15, 2023

To disclose

8 weeks

Affected

8,358state residents only

Linked

39 filings

Confidence

69%

Full breach record for Harvard Pilgrim Health Care →12 incidents on file

Supplemental notice to Washington AG regarding Harvard Pilgrim Health Care's April 17, 2023 ransomware incident. Unauthorized access occurred March 28-April 17, 2023. Data copied included PHI, SSNs, names, DOBs, and financial info. 8,358 Washington residents affected. Investigation ongoing.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d8 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 20 days

discovery → filing · 8 weeks / 59 days

Mar 28, 2023

Begins

Apr 17, 2023

Discovered

Jun 15, 2023

Filed

vs. sector median

1 wks faster

This filing is one of 39 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_6228e5282fce12112024-03-27 · +286dVerified by operator
Delaware State AGbd_653dd03a96a630572024-03-27 · +286dVerified by operator
Delaware State AGbd_3d033309f7ace5eb2024-10-03 · +476dVerified by operator
Maine State AGbd_59b7d4f12c5ff2b62024-10-03 · +476dVerified by operator

Show 6 more filings ↓up to 882d gap

California State AGbd_7d6e82e2351b46c62024-10-03 · +476dVerified by operator
New Hampshire State AGbd_9b1c4d63a64d8aab2024-10-03 · +476dVerified by operator
California State AGbd_6137e2525e0f88892025-01-21 · +586dVerified by operator
Vermont State AGbd_e97c70caa0c2a5f52025-01-21 · +586dVerified by operator
Rhode Island State AGbd_3191bdd54d499ebf2025-01-27 · +592dVerified by operator
Maryland State AGbd_10d522138bb443a92025-11-13 · +882dVerified by operator

Showing first 10 of 38 linked disclosures.

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: Harvard Pilgrim Health Care
norm: harvard pilgrim health care
Domain: point32health.org
Industry: Healthcarellm

Discovered: Apr 17, 2023
Breach occurred: Mar 28, 2023 – Apr 17, 2023
Undetected for: 20 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 23, 2023
Affected individuals: 8,358state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial accountPHI
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProvided written notice to relevant state and federal regulatorsNotified the U.S. Department of Health and Human Services

During the incident: Took systems offline to contain the threat
Notified law enforcement and regulators
Worked with third-party cybersecurity experts to conduct a thorough investigation
Posted notice to its website
Provided notice to statewide media in all fifty (50) states
Notified providers, brokers and employer groups
Began providing written notice of this incident to individuals
Offering two (2) years of complimentary credit monitoring and identity protection services through IDX
Changes made: Implemented additional cybersecurity safeguards to its existing robust infrastructure
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(59 days from discovery to filing)
Compliance flags: WA AG >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 8 states

View merged incident ↗

Washington State AGJun 15 · first · this page

Maine State AG+286d

Delaware State AG+286d

Delaware State AG+476d

Maine State AG+476d

California State AG+476d

New Hampshire State AG+476d

California State AG+586d

Vermont State AG+586d

Rhode Island State AG+592d

Maryland State AG+882d

Pattern: first filing Jun 15 (WA), last Nov 13 (MD) — a 882-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 38 — 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.

Source URL: https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA24516.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 15, 2023
Raw hash: b7c5bcbb3a7e1032a73d8ec5112cb9d1f9510fa7c987c9f0ab425af0779d711e

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityHarvard Pilgrim Health Care

Incidentdiscovered Apr 17, 2023

Stated responseTook systems offline to contain the threat

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com