DisclosureLens
UnknownGovernment IDFinancial accountMedium

EISAI INC.

bd_cec3ca64f45dce4c · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Oct 2, 2023

To disclose

—

Affected

696state residents only

Linked

6 filings

Confidence

95%
Full breach record for EISAI INC. →5 incidents on file

Eisai Inc. reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-10-02. 696 Massachusetts residents were affected. The report records the breach type as electronic.

Leak gap clock✗ Leak >180d
⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Oct 2, 2023

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 6 about the same incident.View merged incident
A leak claim by atomsilo about this victim predates this filing by 650 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Show 1 more filing ↓

Filing propagation · 6 filings · 6 states

View merged incident ↗
Indiana State AGOct 2 · first
Maine State AGOct 2 · first
Vermont State AGOct 2 · first
New Hampshire State AGOct 2 · first
Montana State AGOct 2 · first
Massachusetts State AGOct 2 · 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.