HackingHealthcareHealthcareVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedTargetedPHIHealth (basic)Identity (basic)Government IDMediumContained

CareSource

bd_8cae43083631f018 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 27, 2023

Filed

Aug 30, 2023

To disclose

9 weeks

Affected

581state residents only

Linked

9 records

Confidence

70%

Full breach record for CareSource →6 incidents on file

CareSource disclosed a breach affecting 581 Washington residents. Unauthorized access occurred on May 31, 2023, via a vulnerability in MOVEit software used by a vendor. CareSource was identified as a victim on June 27, 2023. Stolen data included PHI, SSNs, and PII. CareSource patched the software and offered two years of credit monitoring via Kroll.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d9 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 · 27 days

discovery → filing · 9 weeks / 64 days

May 31, 2023

Begins

Jun 27, 2023

Discovered

Aug 30, 2023

Filed

vs. sector median

on median

This filing is one of 9 records about the same incident.View merged incident

A leak claim by cl0p about this victim was first seen 62 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_92cee760ff4463cd2023-06-29 · +62dVerified by operator

Regulatory filings (7) · sorted by filing gap

New Hampshire State AGCL0Pbd_023953673f35b8272023-08-30Verified
Massachusetts State AGbd_6a936f6fd472b50c2023-08-28 · +2dVerified by operator
California State AGbd_a5a734fce487738a2023-08-28 · +2dVerified by operator
Vermont State AGbd_6c68eb604349c96d2023-08-25 · +5dVerified by operator

Show 3 more filings ↓up to 241d gap

HHS OCRbd_15516622e95b67bb2023-07-27 · +34dVerified by operator
New Hampshire State AGbd_ad59de38582addd52023-07-18 · +43dVerified by operator
Illinois State AGbd_40d83cd3b7afec812023-01-01 · +241dVerified by operator

Name: CareSource
norm: caresource
Domain: caresource.com

Name: CareSource
norm: caresource
Domain: caresource.com
Industry: Healthcarellm

Discovered: Jun 27, 2023
Breach occurred: May 31, 2023
Undetected for: 27 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 581state-resident count only
Data types: PHIHealth (basic)Identity (basic)Government ID
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 1-99dexposure 0d
WA-stated discovery: Found after the fact
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Initial access: supply_chain

During the incident: Added all patches from MOVEit
Began an investigation to find if any data was stolen
Partnered with Kroll to offer two years of credit monitoring
Changes made: Added all patches from MOVEit
Looking into what, if any, updated processes may be needed
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(64 days from discovery to filing)
Compliance flags: WA AG >30dLeak >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 · 8 filings · 7 states

View merged incident ↗

Illinois State AGJan 1 · first

New Hampshire State AG+198d

HHS OCR+207d

Vermont State AG+236d

Massachusetts State AG+239d

California State AG+239d

New Hampshire State AG+241d

Washington State AG+241d · this page

Pattern: first filing Jan 1 (IL), last Aug 30 (WA) — a 241-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/BreachA26378.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 30, 2023
Raw hash: 25521db3914503196f94eb0ea5af1e8eaba9b0905aae82a42e0aaa0439883aed

Linked disclosures

Ransomware claims (1)

Regulatory filings (7) · sorted by filing gap

Reporting entityCareSource

Victim entityCareSource

Incidentdiscovered Jun 27, 2023

Stated responseAdded all patches from MOVEit

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com