Social EngineeringPhishingCustomer Data InvolvedPIIIDENTITY_BASICLowContained
MAINSTREET FEDERAL CREDIT UNION
bd_8d3fdafae2c42fb4 · schema v1 · pii pii-v1
Full breach record for MAINSTREET FEDERAL CREDIT UNION →Mainstreet Federal Credit Union notified Massachusetts residents of a data security incident involving unauthorized access to customer information, likely via a phishing attack targeting the credit union's email environment. The incident compromised personal data, and the credit union has enhanced its email security measures.
Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident
Source provenance
- Source URL
- https://www.mass.gov/doc/2026-1001-mainstreet-credit-union/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Jun 1, 2026
- Raw hash
- dae1cac665ce45164a6ce76fe14f3d9253dd2dd7e532fe1c56793f55ce462495
Reporting entity
- Name
- MAINSTREET FEDERAL CREDIT UNIONnorm: mainstreet federal credit union
Victim entity
- Name
- MAINSTREET FEDERAL CREDIT UNIONnorm: mainstreet federal credit union
Incident
- Discovered
- —
- Materiality determined
- —
- Notification sent
- —
- Affected individuals
- Not disclosed
- Data types
- PIIIDENTITY_BASIC
- Attack vector
- Phishing
- MITRE ATT&CK
- T1566.002 Spearphishing Link
- Threat actor
- External
- Initial access
- phishing_link
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.