Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountHighContained

Summit National Bank

bd_8b42e95fdae448d4 · schema v1 · pii pii-v1

Severity

High

Discovered

May 15, 2024

Filed

Aug 16, 2024

To disclose

13 weeks

Affected

2,206state residents only

Linked

5 filings

Confidence

65%

Full breach record for Summit National Bank →2 incidents on file

Summit National Bank notified affected individuals of unauthorized access to an email account between May 13-16, 2024, discovered on May 15, 2024. The incident exposed names, SSNs, contact info, and financial account data. The bank engaged forensic specialists and is offering credit monitoring services.

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Incident timeline

undetected · 2 days

discovery → filing · 13 weeks / 93 days

May 13, 2024

Begins

May 15, 2024

Discovered

Aug 16, 2024

Filed

vs. sector median

+5 wks slower

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_031ae01024263b8f2024-08-16Verified
Maine State AGbd_47b7e0fcd0cb02a02024-08-16Candidate
Vermont State AGbd_4967d7c063f597d82024-08-16Verified
New Hampshire State AGbd_bda5a21c57d9a4192024-08-16Verified

Name: Summit National Bank
norm: summit national bank

Name: Summit National Bank
norm: summit national bank
Industry: Financial Servicesllm

Discovered: May 15, 2024
Breach occurred: May 13, 2024 – May 16, 2024
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 16, 2024
Affected individuals: 2,206state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Took steps to confirm the suspicious activity
Began an investigation to determine the nature and scope of the activity
With the assistance of third-party forensic specialists
Initiated a review of the type of data located within that email account
Offering credit monitoring and identity protection services through Experian
Changes made: Assess and further strengthen the security of our systems and computer environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(93 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Massachusetts State AGAug 16 · first

Maine State AGAug 16 · first

Vermont State AGAug 16 · first

New Hampshire State AGAug 16 · first

Montana State AGAug 16 · 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1596.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 16, 2024
Raw hash: 839f094d6a35226b86ff7d602194ce7b90836defb6af6dc97b883b51fee1e029

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entitySummit National Bank

Victim entitySummit National Bank

Incidentdiscovered May 15, 2024

Stated responseTook steps to confirm the suspicious activity

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov