MidFirst Bank
bd_5eec0209f5842ab8 · schema v1 · pii pii-v1
Full breach record for MidFirst Bank →2 incidents on fileMidFirst Bank reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-08-21. 3,818 Massachusetts residents were affected. The report records the breach type as electronic.
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Incident timeline — partial
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Breach window unknown
Aug 21, 2023
Filed
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Corroborated · see linked filings
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Linked disclosures
Why this link?Regulatory filings (4) · sorted by filing gap
- Montana State AGbd_3f83236ccf1420dd2023-08-21Verified
- Oregon State AGbd_63b23748175961ff2023-08-21Verified
- California State AGbd_e933a0e5fa8c3b692023-08-21Verified
- Washington State AGbd_4cdab9b39b8d07192023-08-04 · +17dCandidate
Filing propagation · 5 filings · 5 states
View merged incident ↗Pattern: first filing Aug 4 (WA), last Aug 21 (MA) — a 17-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.