DisclosureLens
HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedData ExfiltratedFinancial accountPIILowContained

Main Street Bank

bd_261192707ae4ea56 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 17, 2026

Filed

Jul 23, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

65%
Full breach record for Main Street Bank →208 incidents on file

Main Street Bank notified Massachusetts customers of a suspected data compromise at a merchant's payment card environment. The incident, occurring between Nov 18, 2025 and July 6, 2026, exposed customer debit card numbers, names, and expiration dates. Bank systems were not compromised. Customers were offered new cards and advised to monitor accounts.

Massachusetts clock✓ MA AG ≤30d
⚠ notification dateThe stored discovery date equals the NOTIFICATION date, collapsing the clock to ~zero. This UNDERSTATES the delay and can mask a real violation.

Incident timeline

undetected · 241 days
discovery → filing · 6 days

Nov 18, 2025

Begins

Jul 17, 2026

Discovered

Jul 23, 2026

Filed

This filing is one of 2 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Filing propagation · 2 filings

View merged incident ↗
Massachusetts State AGJul 23 · first · this page
Massachusetts State AG+40d

Pattern: first filing Jul 23 (MA), last Sep 1 (MA) — a 40-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.