HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Government IDMediumContained

MASCOMA BANK

bd_bf39a0453b59673a · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 12, 2023

Filed

Aug 25, 2023

To disclose

6 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

65%

Full breach record for MASCOMA BANK →

Mascoma Bank notified consumers of a data breach involving its third-party vendor, MOVEit Transfer. Data copied on May 30, 2023, included names and Social Security numbers. Mascoma Bank offered 12 months of credit monitoring and is issuing new account numbers. The incident was discovered on July 12, 2023.

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Vermont clock⏱ VT AG >14 bday6 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 43 days

discovery → filing · 6 weeks / 44 days

May 30, 2023

Begins

Jul 12, 2023

Discovered

Aug 25, 2023

Filed

vs. sector median

2 wks faster

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

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_867da214ab4d68e82023-08-25Verified

Name: MASCOMA BANK
norm: mascoma bank
Industry: financial_services

Name: MASCOMA BANK
norm: mascoma bank
Industry: financial_services
Industry: Financial Servicesllm

Discovered: Jul 12, 2023
Breach occurred: May 30, 2023
Undetected for: 43 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 25, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: ExternalFinancial
Initial access: supply_chain

During the incident: Launched an investigation
Conducted a review of the data
Moving quickly to issue potentially affected customers with new account numbers
Offering immediate access to complimentary credit monitoring and identity theft protection services for twelve (12) months through IDX
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(44 days from discovery to filing)
Compliance flags: VT AG >14 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGAug 25 · first

Vermont State AGAug 25 · 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.

Source URL: https://ago.vermont.gov/document/2023-08-25-mascoma-bank-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 25, 2023
Raw hash: 3054901552c0849cd5d3d7b696e32e7798309e1196cb942f79d43686d0fd565a

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMASCOMA BANK

Victim entityMASCOMA BANK

Incidentdiscovered Jul 12, 2023

Stated responseLaunched an investigation

ComplianceVT AG >14 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov