HackingFinanceData ExfiltratedCustomer Data InvolvedBusiness Associate (HIPAA)Downstream VictimsFinancial accountHealth (basic)Identity (basic)Government IDMediumContained

KH Credit Union

bd_8c741ed027f93dbe · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 20, 2025

Filed

Jun 16, 2026

To disclose

13 months

Affected

1state residents only

Linked

3 filings

Confidence

65%

Full breach record for KH Credit Union →

Kettering Health notified KH Credit Union members of unauthorized access to Kettering's network (not KHCU's) between April 9 and May 20, 2025. The incident exposed member names, SSNs, driver's licenses, bank/financial account numbers, and medical billing information. Kettering engaged third-party investigators and federal law enforcement, and is offering 12 months of credit monitoring and fraud assistance via Cyberscout/TransUnion.

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Massachusetts clock✗ MA AG >90d13 months discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 41 days

discovery → filing · 13 months / 392 days

Apr 9, 2025

Begins

May 20, 2025

Discovered

Jun 16, 2026

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_394a306c1d9f3f322026-06-16Verified
Nebraska State AGbd_dcb241fae24c6f112026-06-16Candidate

Name: Kettering Health
norm: kettering health
Domain: ketteringhealth.org
Industry: healthcare

Name: KH Credit Union
norm: kh credit union
Domain: khcreditunion.com
Industry: financial_services

Discovered: May 20, 2025
Breach occurred: Apr 9, 2025 – May 20, 2025
Undetected for: 41 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 16, 2026
Affected individuals: 1state-resident count only
Data types: Financial accountHealth (basic)Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: working with federal law enforcement agencies
Initial access: valid_credentials

During the incident: Took steps to secure our environment
Conducted a comprehensive investigation
Working with federal law enforcement agencies
Providing you with access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing you with proactive fraud assistance
Changes made: Built upon existing cybersecurity practices
Reviewed existing security policies to further protect against similar events moving forward
Reviewing policies, procedures and processes to reduce the likelihood of a similar future event
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 months(392 days from discovery to filing)
Compliance flags: MA AG >90d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGJun 16 · first

Nebraska State AGJun 16 · first

Massachusetts State AGJun 16 · first · this page

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://www.mass.gov/doc/2026-985-kh-credit-union/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 16, 2026
Raw hash: 1aa496d3b57647396664d89ca2a8f311955655293ab0e882c41c34e189ea1ba8

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityKettering Health

Victim entityKH Credit Union

Incidentdiscovered May 20, 2025

Stated responseTook steps to secure our environment

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov