HackingFinancial ServicesFinanceStolen CredentialsCapture Stored DataSupply Chain (3P Vendor)Customer Data InvolvedData ExfiltratedPIIIdentity (basic)Financial accountLowActive

Arvest Bank

bd_56b8b28ee38699db · schema v1 · pii pii-v1

Severity

Low

Discovered

Jul 5, 2022

Filed

Nov 1, 2022

To disclose

17 weeks

Affected

2state residents only

Linked

6 filings

Confidence

66%

Full breach record for Arvest Bank →4 incidents on file

Arvest Bank notified the NH AG of a third-party vendor breach involving Overby-Seawell Company (OSC). Unauthorized access to OSC servers began May 26, 2022. OSC discovered suspicious activity July 5, 2022. Customer data (names, loan info, addresses, insurance policy info) was exposed. 2 NH residents affected. Arvest offered 1-year IDProtect monitoring and credit freeze guidance. Investigation ongoing.

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Incident timeline

undetected · 40 days

discovery → filing · 17 weeks / 119 days

May 26, 2022

Begins

Jul 5, 2022

Discovered

Nov 1, 2022

Filed

vs. sector median

+8 wks slower

This filing is one of 6 about the same incident.View merged incident

Part of Overby-Seawell Company supply-chain incident (2022) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

New Hampshire State AGbd_d283aa8cbecd0a842022-11-01Verified
Montana State AGbd_73338af0fd55bb252022-10-28 · +4dVerified
Maine State AGbd_939f65abcb109caa2022-09-09 · +53dCandidate
Delaware State AGbd_67031eb717a26f3c2022-08-30 · +63dVerified

Show 1 more filing ↓up to 63d gap

New Hampshire State AGbd_d99714d71dcc32ec2022-08-30 · +63dVerified

Name: Arvest Bank
norm: arvest bank

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

Discovered: Jul 5, 2022
Breach occurred: May 26, 2022
Undetected for: 40 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2022
Affected individuals: 2state-resident count only
Data types: PIIIdentity (basic)Financial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General
Third party: via Overby-Seawell Company
Initial access: trusted_relationship

During the incident: Engaged third-party forensic specialists
Providing affected residents with written notification
Offering affected residents complimentary one-year memberships with IDProtect credit monitoring services
Advising affected residents about the process for placing fraud alerts and/or security freezes on their credit files
Providing contact information for the three primary nationwide consumer reporting agencies and the Federal Trade Commission
Changes made: Requiring the vendor to perform security enhancements
Required password changes for Arvest and all other businesses who utilize their service
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(119 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 4 states

View merged incident ↗

Delaware State AGAug 30 · first

New Hampshire State AGAug 30 · first

Maine State AG+10d

Montana State AG+59d

New Hampshire State AG+63d

New Hampshire State AG+63d · this page

Pattern: first filing Aug 30 (DE), last Nov 1 (NH) — a 63-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/arvest-bank-20221101.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 1, 2022
Raw hash: 0122411f65ae2d56070c7ee97a158d99f6ea17ad7ecc633026b4df308945aacb

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityArvest Bank

Victim entityArvest Bank

Incidentdiscovered Jul 5, 2022

Stated responseEngaged third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov