HackingFinancial ServicesFinanceSupply Chain (3P Vendor)Customer Data InvolvedPIIIdentity (basic)LowContained

FIRST MID BANCSHARES, INC.

bd_5d221bc3e23cea0a · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 16, 2024

Filed

Jan 19, 2024

To disclose

3 days

Affected

5state residents only

Linked

2 filings

Confidence

67%

Full breach record for FIRST MID BANCSHARES, INC. →2 incidents on file

First Mid Bancshares, Inc. notified New Hampshire residents of a data security event involving third-party vendor Fiserv. Approximately 5 NH residents were affected. First Mid investigated, assessed systems, and provided credit monitoring via Kroll.

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Incident timeline

discovery → filing · 3 days

Jan 16, 2024

Discovered

Jan 19, 2024

Filed

vs. sector median

8 wks faster

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

Part of FISERV, INC. 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_b5472c68c23dcbe32024-01-19Verified

Name: FIRST MID BANCSHARES, INC.
norm: first mid bancshares

Name: FIRST MID BANCSHARES, INC.
norm: first mid bancshares
Industry: Financial Servicesllm

Discovered: Jan 16, 2024
Materiality determined: —
Notification sent: Jan 16, 2024
Affected individuals: 5state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: Partner
Third party: via Fiserv
Initial access: supply_chain

During the incident: Investigate and respond to the event
Assess the security of First Mid systems
Notify potentially affected individuals
Providing access to credit monitoring services for through Kroll
Changes made: Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 3 days(3 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 ↗

Massachusetts State AGJan 19 · first

New Hampshire State AGJan 19 · 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://mm.nh.gov/files/uploads/doj/remote-docs/first-mid-bancshares-fiserv-20240119.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 19, 2024
Raw hash: b5bcefadb1bb4edf886b9623821726fc5bfa989f38a058119dac42e28a964b1c

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityFIRST MID BANCSHARES, INC.

Victim entityFIRST MID BANCSHARES, INC.

Incidentdiscovered Jan 16, 2024

Stated responseInvestigate and respond to the event

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov