GEORGIAHackingHealthcareHealthcarePHIHealth (basic)Identity (basic)HighContained

MCBS, LLC

bd_8ed31a4b32add53a · schema v1 · pii pii-v1

Severity

High

Discovered

—

Filed

Jun 26, 2026

To disclose

—

Affected

1,261,464

Linked

7 filings

Confidence

69%

Full breach record for MCBS, LLC →2 incidents on file

MCBS, LLC reported to HHS on 2026-06-26 a Hacking/IT Incident affecting 1,261,464 individuals. Breached information located on Network Server. Business Associate present.

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Leak gap clock✗ Leak >180d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

⚠ No discovery dateThe OCR public portal omits the discovery date, so the 60-day notification clock cannot be evaluated from this source — only that the filing was submitted.

Incident timeline — partial

? — ?

Breach window unknown

Jun 26, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 7 about the same incident.View merged incident

A leak claim by pear about this victim predates this filing by 274 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitepearbd_fbca2f8d470dced22025-09-25 · +274dVerified by operator

Regulatory filings (5) · sorted by filing gap

California State AGbd_32aaf81428502adc2026-06-26Verified by operator
New Hampshire State AGbd_8f3ea50c0a24e40c2026-06-29 · +3dVerified by operator
Texas State AGbd_51bebdfc54a78a9b2026-06-30 · +4dVerified
South Carolina State AGbd_bf3c11705b24a8a62026-07-01 · +5dVerified

Show 1 more filing ↓up to 5d gap

Illinois State AGbd_bf98d272641890612026-07-01 · +5dVerified

Name: MCBS, LLC
norm: mcbs
Domain: mcbs.com
Industry: Health Care Services

Name: MCBS, LLC
norm: mcbs
Domain: mcbs.com
Industry: Healthcaresource default

Discovered: Not extracted — the OCR public portal omits it
Materiality determined: —
Notification sent: —
Affected individuals: 1,261,464nationwide
Data types: PHIHealth (basic)Identity (basic)
HHS breach type: Hacking / IT incident
Where the data lived: Network server
Covered-entity type: Business associate
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified HHS

Compliance flags: Leak >180dHHS notified
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.
Clock breakdown: Statute Window Elapsed Threshold Status
HIPAA
Discovered: not extracted
→ Notified: not extracted
— regulatory submission HHS notified

Statute	Window	Elapsed	Threshold	Status
HIPAA	Discovered: not extracted → Notified: not extracted	—	regulatory submission	HHS notified

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

California State AGJun 26 · first

HHS OCRJun 26 · first · this page

New Hampshire State AG+3d

Texas State AG+4d

South Carolina State AG+5d

Illinois State AG+5d

Pattern: first filing Jun 26 (CA), last Jul 1 (IL) — a 5-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://ocrportal.hhs.gov/ocr/breach/breach_report.jsf
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Jun 26, 2026
Raw hash: cd085f65e3d084c7ae51c46e0e3f08c565908e7f24d153a3d450bd68952478f2

AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.

text/html967 B

Download View at source

Linked disclosures

Ransomware claims (1)

Regulatory filings (5) · sorted by filing gap

Reporting entityMCBS, LLC

Victim entityMCBS, LLC

IncidentUnauthorized Access

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenanceocrportal.hhs.gov

Source filing