HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

First National Bank of the Rockies

bd_deda802ee471b4a1 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 4, 2023

Filed

Jul 28, 2023

To disclose

16 weeks

Affected

281state residents only

Linked

2 filings

Confidence

64%

Full breach record for First National Bank of the Rockies →

Bank of the Rockies notified Montana residents of a cyberattack on its email system occurring between March 30 and April 4, 2023. Unauthorized access exposed names, government IDs, and financial account numbers. The bank engaged forensic experts, reset passwords, blocked IPs, and notified law enforcement. Affected individuals were offered one year of Experian IdentityWorks credit monitoring.

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Incident timeline

undetected · 5 days

discovery → filing · 16 weeks / 115 days

Mar 30, 2023

Begins

Apr 4, 2023

Discovered

Jul 28, 2023

Filed

vs. sector median

+8 wks slower

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Maine State AGbd_4404c978601857082023-07-28Candidate

Name: First National Bank of the Rockies
norm: first national bank of the rockies

Name: First National Bank of the Rockies
norm: first national bank of the rockies
Industry: Financial Servicesllm

Discovered: Apr 4, 2023
Breach occurred: Mar 30, 2023 – Apr 4, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 28, 2023
Affected individuals: 281state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Notified law enforcement
Initial access: valid_credentials

During the incident: Hired third-party experts to address this situation, perform an investigation into the unauthorized activity, and further secure our systems
Changing passwords and blocking IP addresses associated with the attack
Notified law enforcement
Changes made: Bolster our security
Offering a complimentary one-year membership to Experian’s IdentityWorks
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(115 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Maine State AGJul 28 · first

Montana State AGJul 28 · 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-484.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 28, 2023
Raw hash: 9ba6dbd10700b99493e993de47d6e916bfa87e4369435c6692baf4387bf108ea

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityFirst National Bank of the Rockies

Victim entityFirst National Bank of the Rockies

Incidentdiscovered Apr 4, 2023

Stated responseHired third-party experts to address this situation, perform an investigation into the unauthorized activity, and further secure our systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov