St. Mary's Credit Union
bd_8f7452449e0210a4 · schema v1 · pii pii-v1
Full breach record for St. Mary's Credit Union →357 incidents on fileSt. Mary's Credit Union notified Massachusetts members of a security incident involving Mastercard where their debit/ATM cards may have been compromised, potentially allowing unauthorized access to funds. The credit union lowered daily limits, issued new cards, and deactivated old ones. No specific breach date or count of affected individuals was provided in the notification letter.
J jump to incidentP pin to compareR raw source
Incident timeline — partial
? — ?
Breach window unknown
Jan 23, 2026
Filed
—
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 (2) · sorted by filing gap
- Massachusetts State AGbd_86bfc42f969969922026-01-30 · +7dCandidate
- Massachusetts State AGbd_47bbf035e6719ffb2026-01-16 · +7dCandidate
Filing propagation · 3 filings
View merged incident ↗Pattern: first filing Jan 16 (MA), last Jan 30 (MA) — a 14-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.