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Confirmed5 filings · 3 statesUnverified claimConfirmedEnforceddispossessorhigh sensitivity

Merged incident · 5 filings

Ohio Historical Society — July 2023 breach

Clustered 5 filings across 4 jurisdictions · filing window Jul 3, 2023 → Aug 23, 2023. View entity profile → Other incidents for this victim →

⚠ 1 cross-filing discrepancy →Merge100%

Determination

Confirmed

Members

5 filings

States

Affected · reported

7,600

First → last filing

Jul 3, 2023 → Aug 23, 2023

Merge confidence

100%

incident inc_5b81351983104447 · merged by human · confidence 100%

Confirmed breach. Merged as one breach: 3 regulatory filings and 2 unverified claims. Intrusion Jul 1, 2023–Jul 9, 2023, discovered Jul 9, 2023 — the first regulatory filing landed 45 days later. 7,600 individuals reported across the linked filings. Data reported: Government ID, Financial account, Financial credentials, and 2 more. Notifications rolled out on a 51-day schedule across 3 filings beginning Jul 3, 2023. Each member filing remains the legal record for its jurisdiction.

Litigation Timing

Notification delay

45days

Discovered → first regulatory filing

Discovery variance

0days

Range of discovered_at dates across filings

Leak precedence

51days before filing

Days between the first leak-site claim and the first regulatory filing. 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

51days

Time between earliest and latest filing

Not recorded for this incident

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

Regulatory clocksMaine⏱ ME AG >30d · 45dLeak gap⏱ Leak >30dFull clock table in Litigation Timeline

No cross-filing comparison data available for this incident.

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