HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedIdentity (basic)Financial accountLowContained

Arvest Bank

bd_18f55393987d9f21 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

Oct 31, 2022

To disclose

—

Affected

1state residents only

Linked

3 filings

Confidence

66%

Full breach record for Arvest Bank →4 incidents on file

Arvest Bank notified customers of a data breach involving its vendor, Overby-Seawall Company (OSC). An unauthorized party gained access to OSC systems, exposing customer names, loan amounts, loan numbers, mailing addresses, and insurance policy information. Arvest mandated security enhancements and password resets for OSC users and offered one year of complimentary IDProtect identity theft services. No identity fraud was reported at the time of notice.

J jump to incidentP pin to compareR raw source

Incident timeline — partial

? — ?

Breach window unknown

Oct 31, 2022

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_5a921e7b0aebaf9e2022-10-31Verified
Maine State AGbd_5659df1e84b505012022-11-01 · +1dCandidate

Name: Arvest Bank
norm: arvest bank

Name: Arvest Bank
norm: arvest bank
Industry: Financial Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1078 Valid Accounts
Threat actor: External
Third party: via Overby-Seawall Company
Initial access: supply_chain

During the incident: Requiring the vendor to perform security enhancements
Required password changes for Arvest and all other businesses who utilize their service
Offering identity theft services through IDProtect at no charge for one year
Changes made: Security enhancements by vendor
Required password changes for Arvest and all other businesses who utilize their service
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGOct 31 · first

Montana State AGOct 31 · first · this page

Maine State AG+1d

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-673.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 31, 2022
Raw hash: 04aa9d5e71432e29450d5b8d569b9f73ac69c8b99ef24c469c082ba8970eb07f

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityArvest Bank

Victim entityArvest Bank

IncidentThird-Party / Supply Chain

Stated responseRequiring the vendor to perform security enhancements

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov