DisclosureLens
Leak SiteHHS OCRState AGConfirmed7 records · 6 statesLifecycle stage 2 of 3: ConfirmedUnverified claimConfirmedEnforcedpearhigh sensitivity
Merged incident · 7 records

MCBS, LLC — September 2025 breach

Clustered 7 records across 6 jurisdictions: 6 filings and 1 leak-site claim · filing window Jun 26, 2026 → Jul 1, 2026 (dated filings only). View entity profile → Other incidents for this victim →

Determination

Confirmed

Members

7 records

States

6

Affected · reported

1,261,464

First → last dated filing

Jun 26, 2026 → Jul 1, 2026

Merge confidence

100%

incident inc_3d4705cf36d84e39 · merged by deterministic · confidence 100%

Confirmed breach. Merged as one breach: 6 regulatory filings and 1 unverified claim. The filings describe unauthorized access. Intrusion Sep 22, 2025–Sep 26, 2025, discovered Sep 22, 2025 — the first regulatory filing landed 277 days later. 1,261,464 individuals reported across the linked filings. Data reported: Government ID, PHI, Health (basic), and 3 more. Notifications rolled out on a 5-day schedule across 5 dated filings beginning Jun 26, 2026. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay
277days

Discovered → first regulatory filing

Discovery variance
248days

Range of discovered_at dates across filings

Leak precedence
269days before filing

Days between the first sighting of the earliest-seen leak-site claim and the first regulatory filing. Measured from when the aggregator first saw the post, not the crew's own (often earlier) date. Positive = the claim came first (public exposure before disclosure). Negative = the claim trailed the filing, so there was no pre-disclosure leak. Counts regulatory filings only — press coverage is not a regulatory disclosure.

Filing span
5days

Time between earliest and latest filing

Not recorded for this incident

Materiality delta · SEC filing delay — no SEC 8-K in this cluster.

Regulatory clocksLeak gap✗ Leak >180dFull clock table in Litigation Timeline

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MCBS, LLC data breach (2025) — filings in 6 jurisdictions, September 2025 · DisclosureLens