DisclosureLens
UnknownEducationMedium

Mastery Charter High School

bd_557cf3225408f29a · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 6, 2025

To disclose

—

Affected · nationwide

37,0311 in this filing

Linked

4 filings

Confidence

95%
Full breach record for Mastery Charter High School →2 incidents on file

Mastery Charter High School reported a data breach to the Indiana Attorney General. The breach occurred on 2024-09-14 and was reported on 2025-06-06. 1 Indiana residents were affected. 37,031 individuals affected in total.

Incident timeline

Sep 14, 2024

Begins

Jun 6, 2025

Filed

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Filing propagation · 4 filings · 4 states

View merged incident ↗
Vermont State AGJun 6 · first
Maine State AGJun 6 · first
Indiana State AGJun 6 · first · this page
New Hampshire State AG+6d

Pattern: first filing Jun 6 (VT), last Jun 12 (NH) — a 6-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.