HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Data ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

ANDERSON BANCSHARES, INC.

bd_bea06e7fae8a61b8 · schema v1 · pii pii-v1

Severity

High

Discovered

Oct 28, 2025

Filed

Dec 5, 2025

To disclose

5 weeks

Affected · nationwide

3,2721 in this filing

Linked

4 filings

Confidence

66%

Full breach record for ANDERSON BANCSHARES, INC. →

Anderson Bancshares, Inc. (d/b/a Anderson Brothers Bank) disclosed a third-party data breach involving its vendor, Marquis Software Solutions. Unauthorized access occurred on or about August 14, 2025, affecting personal information including names, SSNs, DOBs, and financial account data of approximately 3,272 individuals. Anderson was notified on October 28, 2025, and began notifying affected individuals on December 5, 2025, offering 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 28, 2025 → Filed with AG Dec 5, 202538d ⏱ ME AG >30d5 weeks discovery → filing

Incident timeline

undetected · 75 days

discovery → filing · 5 weeks / 38 days

Aug 14, 2025

Begins

Oct 28, 2025

Discovered

Dec 5, 2025

Filed

vs. sector median

4 wks faster

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

South Carolina State AGbd_6cbf687a46d34fec2025-12-05Verified
Indiana State AGbd_7d1a3369b0cf03d92025-12-05Verified
Massachusetts State AGbd_b50955c26aa00f1e2025-12-05Verified

Name: ANDERSON BANCSHARES, INC.
norm: anderson bancshares

Name: ANDERSON BANCSHARES, INC.
norm: anderson bancshares
Industry: Financial Servicesllm

Discovered: Oct 28, 2025
Breach occurred: Aug 14, 2025
Undetected for: 75 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 5, 2025
Affected individuals: 3,272state + nationwide
Data types: Identity (basic)Government IDFinancial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Providing written notice of this incident to relevant state regulatorsProviding written notice to the three major credit reporting agencies
Third party: via Marquis Software Solutions
Initial access: supply_chain

During the incident: Initiated critical incident response process
Engaged external cybersecurity specialists
Notified applicable authorities
Providing access to credit monitoring services for one (1) year, through Epiq
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Providing written notice to the three major credit reporting agencies
Changes made: Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Advising individuals to report any suspected incidents of identity theft or fraud to their credit card company and/or bank
Providing information on how to place a fraud alert and security freeze on one’s credit file
Providing information on protecting against tax fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 weeks(38 days from discovery to filing)
Compliance flags: ME AG >30d · 38d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Oct 28, 2025
→ Filed with AG: Dec 5, 2025
38d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 28, 2025 → Filed with AG: Dec 5, 2025	38d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

South Carolina State AGDec 5 · first

Indiana State AGDec 5 · first

Massachusetts State AGDec 5 · first

Maine State AGDec 5 · 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/cc53af8b-066b-43ff-a4dd-3407a28b21de.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 5, 2025
Raw hash: 1b846d68f69228e9b14630f806d2e537a452d81df399c109c10b240d2cb1e871

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityANDERSON BANCSHARES, INC.

Victim entityANDERSON BANCSHARES, INC.

Incidentdiscovered Oct 28, 2025

Stated responseInitiated critical incident response process

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov